Login
Copyright

Intro to Astronomy: Help and Review

Course Summary

Improve your knowledge of fundamental astronomy concepts with our engaging and self-paced Intro to Astronomy: Help and Review course. These short lessons and quizzes can help you quickly bring up your astronomy grades, finish homework assignments or get ready for upcoming exams.
Create An Account
To Start This Course Today
Used by over 10 million students worldwide
Create An Account
Try it free for 5 days
27 Chapters in Intro to Astronomy: Help and Review

27 chapters in Intro to Astronomy: Help and Review

Ch 1. The History of Astronomy: Help and Review {{cp.topicAssetIdToProgress[23992].percentComplete}}% complete
Course Progress Best Score
Lesson 1 - The Scientific Field of Astronomy Score: {{cp.lessonAssetIdToProgress[19913].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19913].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Ancient Study of Astronomy Score: {{cp.lessonAssetIdToProgress[19966].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19966].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Constellations: Definition & Name Origins Score: {{cp.lessonAssetIdToProgress[19967].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19967].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What is Astrology? Score: {{cp.lessonAssetIdToProgress[19968].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19968].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Zodiac Constellations & Their Visibility in the Sky Score: {{cp.lessonAssetIdToProgress[19969].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19969].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Telling Time in Ancient Times Score: {{cp.lessonAssetIdToProgress[19970].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19970].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Lunar Calendar & Metonic Cycle Score: {{cp.lessonAssetIdToProgress[19971].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19971].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Connection Between the Seven Days of the Week & Astronomical Objects Score: {{cp.lessonAssetIdToProgress[19972].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19972].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Geocentric, Heliocentric & Ptolemaic Models of the Universe Score: {{cp.lessonAssetIdToProgress[19973].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19973].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Copernican Revolution Score: {{cp.lessonAssetIdToProgress[19974].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19974].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Tycho Brahe's Contribution to Astronomy Score: {{cp.lessonAssetIdToProgress[19975].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19975].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Kepler's Three Laws of Planetary Motion Score: {{cp.lessonAssetIdToProgress[19976].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19976].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Galileo, the Telescope & the Church Score: {{cp.lessonAssetIdToProgress[1160].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1160].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Sir Isaac Newton And Astronomy Score: {{cp.lessonAssetIdToProgress[19977].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19977].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Origins of the Julian & Gregorian Calendars Score: {{cp.lessonAssetIdToProgress[32538].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32538].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Johannes Kepler: Biography, Facts & Discoveries Score: {{cp.lessonAssetIdToProgress[28439].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28439].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - What is Astronomy? - Definition, History, Timeline & Facts Score: {{cp.lessonAssetIdToProgress[16939].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16939].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - What is Science? - Definition, Topics & Branches Score: {{cp.lessonAssetIdToProgress[16954].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16954].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Nature of Science Score: {{cp.lessonAssetIdToProgress[20925].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20925].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Occam's Razor as a Scientific Principle Score: {{cp.lessonAssetIdToProgress[20926].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20926].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Scientific Method: Steps, Terms & Examples Score: {{cp.lessonAssetIdToProgress[3604].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3604].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What is Scientific Research? Score: {{cp.lessonAssetIdToProgress[20927].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20927].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - What Are The Different Kinds of Research Methods? Score: {{cp.lessonAssetIdToProgress[20928].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20928].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Formulating the Research Hypothesis and Null Hypothesis Score: {{cp.lessonAssetIdToProgress[11762].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11762].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Inductive vs. Deductive Reasoning: Differences & Examples Score: {{cp.lessonAssetIdToProgress[11763].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11763].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Research Variables: Dependent, Independent, Control, Extraneous & Moderator Score: {{cp.lessonAssetIdToProgress[11764].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11764].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Sir John Herschel: Biography & Photography Score: {{cp.lessonAssetIdToProgress[17421].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17421].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Matter: Physical and Chemical Properties Score: {{cp.lessonAssetIdToProgress[1603].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1603].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - States of Matter: Solids, Liquids, Gases, & Plasma Score: {{cp.lessonAssetIdToProgress[5362].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[5362].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition Score: {{cp.lessonAssetIdToProgress[5363].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[5363].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Atom Score: {{cp.lessonAssetIdToProgress[277].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[277].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Atomic Number and Mass Number Score: {{cp.lessonAssetIdToProgress[1607].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1607].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - What Are Elements? Score: {{cp.lessonAssetIdToProgress[3218].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3218].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Periodic Table: Properties of Groups and Periods Score: {{cp.lessonAssetIdToProgress[1614].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1614].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Understanding the Relationships between Elements, Molecules & Compounds Score: {{cp.lessonAssetIdToProgress[19236].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19236].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - The Bohr Model and Atomic Spectra Score: {{cp.lessonAssetIdToProgress[1612].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1612].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Accretion: Definition & Theory Score: {{cp.lessonAssetIdToProgress[54646].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[54646].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Nature of Light: Origin, Spectrum & Color Frequency Score: {{cp.lessonAssetIdToProgress[4914].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4914].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Electromagnetic Waves: Definition, Sources & Properties Score: {{cp.lessonAssetIdToProgress[4913].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4913].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The 7 Major Regions of the Electromagnetic Spectrum Score: {{cp.lessonAssetIdToProgress[6836].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[6836].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Reflection: Angle of Incidence and Curved Surfaces Score: {{cp.lessonAssetIdToProgress[4915].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4915].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Resonance: Definition & Transmission of Waves Score: {{cp.lessonAssetIdToProgress[4916].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4916].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Transparent and Opaque Materials in Electromagnetic Waves Score: {{cp.lessonAssetIdToProgress[4917].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4917].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Color: White Light, Reflection & Absorption Score: {{cp.lessonAssetIdToProgress[4918].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4918].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Refraction & Dispersion: Definition, Snell's Law & Index of Refraction Score: {{cp.lessonAssetIdToProgress[4919].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4919].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Diffraction: Relation to Sound & Light and Effects of Wavelength Score: {{cp.lessonAssetIdToProgress[4920].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4920].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Wave-Particle Duality: Concept, Explanation & Examples Score: {{cp.lessonAssetIdToProgress[4923].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4923].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Wave Parameters: Wavelength, Amplitude, Period, Frequency & Speed Score: {{cp.lessonAssetIdToProgress[5506].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[5506].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - What is Light? Score: {{cp.lessonAssetIdToProgress[31423].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31423].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - What is a Photon? - Definition, Energy & Wavelength Score: {{cp.lessonAssetIdToProgress[10887].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10887].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - The Speed of Light: Distance & Light-Years Score: {{cp.lessonAssetIdToProgress[31428].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31428].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Quantum Physics: Definition, Theories & Topics Score: {{cp.lessonAssetIdToProgress[16919].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16919].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - How Light & Matter Interact Score: {{cp.lessonAssetIdToProgress[31420].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31420].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Blackbody & Blackbody Radiation Theory Score: {{cp.lessonAssetIdToProgress[32371].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32371].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - What Are Wien's Law & the Stefan-Boltzmann Law? Score: {{cp.lessonAssetIdToProgress[32372].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32372].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Calculations with Wien's Law & the Stefan-Boltzmann Law Score: {{cp.lessonAssetIdToProgress[32373].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32373].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Newton's First Law of Motion: Examples of the Effect of Force on Motion Score: {{cp.lessonAssetIdToProgress[2555].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2555].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Distinguishing Between Inertia and Mass Score: {{cp.lessonAssetIdToProgress[14594].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14594].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Mass and Weight: Differences and Calculations Score: {{cp.lessonAssetIdToProgress[14595].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14595].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - State of Motion and Velocity Score: {{cp.lessonAssetIdToProgress[14596].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14596].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Force: Definition and Types Score: {{cp.lessonAssetIdToProgress[14597].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14597].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Forces: Balanced and Unbalanced Score: {{cp.lessonAssetIdToProgress[14599].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14599].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Free-Body Diagrams Score: {{cp.lessonAssetIdToProgress[14598].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14598].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Net Force: Definition and Calculations Score: {{cp.lessonAssetIdToProgress[14600].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14600].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Newton's Second Law of Motion: The Relationship Between Force and Acceleration Score: {{cp.lessonAssetIdToProgress[2556].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2556].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Determining the Acceleration of an Object Score: {{cp.lessonAssetIdToProgress[14601].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14601].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Determining the Individual Forces Acting Upon an Object Score: {{cp.lessonAssetIdToProgress[14602].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14602].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Air Resistance and Free Fall Score: {{cp.lessonAssetIdToProgress[14603].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14603].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Newton's Third Law of Motion: Examples of the Relationship Between Two Forces Score: {{cp.lessonAssetIdToProgress[2557].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2557].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Newton's Laws and Weight, Mass & Gravity Score: {{cp.lessonAssetIdToProgress[2558].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2558].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Identifying Action and Reaction Force Pairs Score: {{cp.lessonAssetIdToProgress[14604].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14604].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - The Normal Force: Definition and Examples Score: {{cp.lessonAssetIdToProgress[14605].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14605].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Friction: Definition and Types Score: {{cp.lessonAssetIdToProgress[14606].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14606].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - The Law of Universal Gravitation: Definition, Importance & Examples Score: {{cp.lessonAssetIdToProgress[19244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19244].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Newton's Law of Gravitation: Definition & Examples Score: {{cp.lessonAssetIdToProgress[33242].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33242].bestScoreQuestions}}  Take Quiz Optional
Lesson 20 - Work as an Integral Score: {{cp.lessonAssetIdToProgress[33244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33244].bestScoreQuestions}}  Take Quiz Optional
Lesson 21 - Gravitational Potential Energy: Definition, Formula & Examples Score: {{cp.lessonAssetIdToProgress[28414].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28414].bestScoreQuestions}}  Take Quiz Optional
Lesson 22 - Gravitational Attraction of Extended Bodies Score: {{cp.lessonAssetIdToProgress[33243].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33243].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Differences Between Translational & Rotational Motion Score: {{cp.lessonAssetIdToProgress[31863].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31863].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Rotational Kinematics: Definition & Equations Score: {{cp.lessonAssetIdToProgress[31864].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31864].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Five Kinematics Quantities & the Big 5 Equations Score: {{cp.lessonAssetIdToProgress[32136].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32136].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Rotational Dynamics & Torque Score: {{cp.lessonAssetIdToProgress[31865].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31865].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Rotational Inertia & Change of Speed Score: {{cp.lessonAssetIdToProgress[31866].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31866].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Kinetic Energy of Rotation Score: {{cp.lessonAssetIdToProgress[31868].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31868].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Rolling Motion & the Moment of Inertia Score: {{cp.lessonAssetIdToProgress[31869].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31869].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Work & Power in Rotational Motion Score: {{cp.lessonAssetIdToProgress[31870].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31870].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Angular Momentum vs. Linear Momentum Score: {{cp.lessonAssetIdToProgress[31871].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31871].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Conservation of Angular Momentum Score: {{cp.lessonAssetIdToProgress[31872].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31872].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Equilibrium: Translational & Rotational Score: {{cp.lessonAssetIdToProgress[31882].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31882].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Free Fall Physics Practice Problems Score: {{cp.lessonAssetIdToProgress[15068].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15068].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Acceleration of Gravity: Definition & Formula Score: {{cp.lessonAssetIdToProgress[15070].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15070].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Four Kinds of Trajectories for Celestial Objects Score: {{cp.lessonAssetIdToProgress[32376].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32376].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Elliptical Orbits: Periods & Speeds Score: {{cp.lessonAssetIdToProgress[33245].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33245].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Eccentricity & Orbits of Planets Score: {{cp.lessonAssetIdToProgress[33278].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33278].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Center of Mass, The Barycenter & Orbital Motion Score: {{cp.lessonAssetIdToProgress[35728].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35728].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Circular Velocity & Escape Velocity Score: {{cp.lessonAssetIdToProgress[35729].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35729].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How Orbits Are Influenced by Gravity & Energy Score: {{cp.lessonAssetIdToProgress[31429].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31429].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Kepler's Laws, Ellipses, and Eccentricity Score: {{cp.lessonAssetIdToProgress[37319].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[37319].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Planets of the Solar System: Orbits & Visibility Score: {{cp.lessonAssetIdToProgress[35730].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35730].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Classical Relativity: Distance and Time Relation to the Observer Score: {{cp.lessonAssetIdToProgress[3229].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3229].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Light and Relativity: Breakdown of Classical Relativity with Light Example Score: {{cp.lessonAssetIdToProgress[3230].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3230].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Time Dilation: Description, Explanation & Examples Score: {{cp.lessonAssetIdToProgress[3231].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3231].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Space Contraction: Shortening Distance for Fast Moving Objects Score: {{cp.lessonAssetIdToProgress[3232].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3232].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Mass and Energy: Description and Interchangeable Relationship Score: {{cp.lessonAssetIdToProgress[3233].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3233].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - General and Special Relativity: Theory and Examples Score: {{cp.lessonAssetIdToProgress[3234].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3234].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Linear Momentum: Definition, Equation, and Examples Score: {{cp.lessonAssetIdToProgress[15928].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15928].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Conservation of Linear Momentum: Formula and Examples Score: {{cp.lessonAssetIdToProgress[15930].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15930].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - What is Energy? - Definition and Significance in Nature Score: {{cp.lessonAssetIdToProgress[2537].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2537].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Kinetic Energy to Potential Energy: Relationship in Different Energy Types Score: {{cp.lessonAssetIdToProgress[2545].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2545].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - What is Mechanical Energy? - Definition & Examples Score: {{cp.lessonAssetIdToProgress[2538].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2538].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Conservation of Mechanical Energy Score: {{cp.lessonAssetIdToProgress[14612].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14612].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What is Thermal Energy? - Definition & Examples Score: {{cp.lessonAssetIdToProgress[2539].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2539].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Temperature Units: Converting Between Kelvins and Celsius Score: {{cp.lessonAssetIdToProgress[2480].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2480].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Changes in Heat and Energy Diagrams Score: {{cp.lessonAssetIdToProgress[2549].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2549].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Atmospheric Pressure: Definition & Effects Score: {{cp.lessonAssetIdToProgress[9480].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9480].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Dynamic Earth: Internal & External Forces that Shape Earth's Surface Score: {{cp.lessonAssetIdToProgress[2520].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2520].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere Score: {{cp.lessonAssetIdToProgress[13471].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13471].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Interactions of Earth's Spheres: Purpose and Examples Score: {{cp.lessonAssetIdToProgress[13472].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13472].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - How Scientists Study Earth's Interior Structure Score: {{cp.lessonAssetIdToProgress[13475].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13475].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Four Stages of Planetary Development Score: {{cp.lessonAssetIdToProgress[30363].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30363].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Earth's Internal Layers: Crust, Mantle & Core Score: {{cp.lessonAssetIdToProgress[13473].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13473].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Seismic Wave: Definition, Types & Frequency Score: {{cp.lessonAssetIdToProgress[17048].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17048].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Plate Tectonics: A Unified Theory for Change of the Earth's Surface Score: {{cp.lessonAssetIdToProgress[2532].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2532].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Subduction Zone: Definition, Location & Example Score: {{cp.lessonAssetIdToProgress[17045].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17045].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Formation of the Moon: Theories Score: {{cp.lessonAssetIdToProgress[2965].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2965].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Measuring Objects in the Sky: Angular Size & Distance Score: {{cp.lessonAssetIdToProgress[30366].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30366].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Important Points on the Celestial Sphere Score: {{cp.lessonAssetIdToProgress[31227].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31227].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Cycle of the Seasons in Astronomy Score: {{cp.lessonAssetIdToProgress[32545].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32545].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Geography of the Four Seasons Score: {{cp.lessonAssetIdToProgress[29872].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29872].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Horizon Coordinate System Score: {{cp.lessonAssetIdToProgress[31228].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31228].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Equatorial Coordinate System Score: {{cp.lessonAssetIdToProgress[31229].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31229].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What is Precession? Score: {{cp.lessonAssetIdToProgress[31231].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31231].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Lunar Eclipse: Definition & Types Score: {{cp.lessonAssetIdToProgress[31124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31124].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What Is a Solar Eclipse? Score: {{cp.lessonAssetIdToProgress[31125].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31125].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Annular Eclipse: The Changing Size of the Moon Score: {{cp.lessonAssetIdToProgress[31126].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31126].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - How Can We Predict An Eclipse? Score: {{cp.lessonAssetIdToProgress[31230].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31230].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Why the Sun Changes Color Score: {{cp.lessonAssetIdToProgress[30368].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30368].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Magnetosphere: Definition & Facts Score: {{cp.lessonAssetIdToProgress[32370].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32370].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - How Gravity, the Moon & the Sun Influence Tides Score: {{cp.lessonAssetIdToProgress[31430].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31430].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Tidal Friction: Effects on Earth & the Moon Score: {{cp.lessonAssetIdToProgress[31431].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31431].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Celestial Equator: Definition & Use Score: {{cp.lessonAssetIdToProgress[36466].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36466].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - First Quarter Moon: Definition & Summary Score: {{cp.lessonAssetIdToProgress[36467].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36467].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Full Moon: Definition, Facts & Features Score: {{cp.lessonAssetIdToProgress[17057].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17057].bestScoreQuestions}}  Take Quiz Optional
Lesson 20 - What is a Waxing Moon? - Definition, Facts & Phase Score: {{cp.lessonAssetIdToProgress[16942].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16942].bestScoreQuestions}}  Take Quiz Optional
Lesson 21 - What is an Equinox? - Definition & Types Score: {{cp.lessonAssetIdToProgress[16952].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16952].bestScoreQuestions}}  Take Quiz Optional
Lesson 22 - What is the Summer Solstice? - Definition & Facts Score: {{cp.lessonAssetIdToProgress[28667].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28667].bestScoreQuestions}}  Take Quiz Optional
Lesson 23 - What is the Vernal Equinox? - Definition & Facts Score: {{cp.lessonAssetIdToProgress[28655].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28655].bestScoreQuestions}}  Take Quiz Optional
Lesson 24 - Why Does the Moon have Phases? Score: {{cp.lessonAssetIdToProgress[36464].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36464].bestScoreQuestions}}  Take Quiz Optional
Lesson 25 - What is a Waning Moon? - Definition, Facts & Phases Score: {{cp.lessonAssetIdToProgress[16943].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16943].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Major Components of the Atmosphere Score: {{cp.lessonAssetIdToProgress[12472].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12472].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Structure of the Atmosphere Score: {{cp.lessonAssetIdToProgress[12473].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12473].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The General Circulation of the Atmosphere Score: {{cp.lessonAssetIdToProgress[11547].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11547].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Pressure: Definition, Units, and Conversions Score: {{cp.lessonAssetIdToProgress[1651].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1651].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Dalton's Law of Partial Pressures: Calculating Partial & Total Pressures Score: {{cp.lessonAssetIdToProgress[1652].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1652].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Gain or Loss of Atmospheric Gas Score: {{cp.lessonAssetIdToProgress[20929].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20929].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Atmosphere on Earth Score: {{cp.lessonAssetIdToProgress[20930].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20930].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Surface & Atmosphere on Mars Score: {{cp.lessonAssetIdToProgress[20931].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20931].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - The Surface & Atmosphere on Venus Score: {{cp.lessonAssetIdToProgress[20932].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20932].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Surface & Atmosphere on Mercury Score: {{cp.lessonAssetIdToProgress[20933].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20933].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Weather vs. Climate: Definition, Differences & Effects Score: {{cp.lessonAssetIdToProgress[11544].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11544].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Weather Variables: Air Pressure, Temperature & Density Score: {{cp.lessonAssetIdToProgress[11546].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11546].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Climate Classifications & Their Global Distribution Score: {{cp.lessonAssetIdToProgress[12480].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12480].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Natural Factors That Determine a Region's Climate Score: {{cp.lessonAssetIdToProgress[2522].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2522].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Global Warming: Atmospheric Causes and Effect on Climate Score: {{cp.lessonAssetIdToProgress[2523].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2523].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Ozone Layer: Importance and the Harmful Effects of Thinning Score: {{cp.lessonAssetIdToProgress[10323].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10323].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Greenhouse Gases and the Enhanced Greenhouse Effect Score: {{cp.lessonAssetIdToProgress[10321].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10321].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Factors Involved in Climate Change Score: {{cp.lessonAssetIdToProgress[45290].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[45290].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Causes of Glaciation Score: {{cp.lessonAssetIdToProgress[13577].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13577].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Microclimate: Definition, Factors & Examples Score: {{cp.lessonAssetIdToProgress[28611].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28611].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Structure of the Sun Score: {{cp.lessonAssetIdToProgress[3200].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3200].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Stages of the Sun's Life Cycle Score: {{cp.lessonAssetIdToProgress[2959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2959].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Ideal Gas Law and the Gas Constant Score: {{cp.lessonAssetIdToProgress[1656].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1656].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Using the Ideal Gas Law: Calculate Pressure, Volume, Temperature, or Quantity of a Gas Score: {{cp.lessonAssetIdToProgress[1657].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1657].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Sun: Atmosphere & Facts Score: {{cp.lessonAssetIdToProgress[31432].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31432].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Photosphere: Definition & Features Score: {{cp.lessonAssetIdToProgress[32176].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32176].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Chromosphere: Definition & Properties Score: {{cp.lessonAssetIdToProgress[32177].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32177].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Solar Corona & Solar Wind Score: {{cp.lessonAssetIdToProgress[32178].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32178].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Solar Flares, Solar Prominences & Coronal Mass Ejections Score: {{cp.lessonAssetIdToProgress[32377].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32377].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Helioseismology & the Heliosphere Score: {{cp.lessonAssetIdToProgress[32179].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32179].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - What Are Sunspots? Score: {{cp.lessonAssetIdToProgress[32180].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32180].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Why Do Sunspots Occur? Score: {{cp.lessonAssetIdToProgress[32181].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32181].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - The Babcock Model of the Sun's Magnetic Cycle Score: {{cp.lessonAssetIdToProgress[32182].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32182].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - How Energy Moves Within the Sun Score: {{cp.lessonAssetIdToProgress[32378].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32378].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - What is Solar Wind? - Definition & Facts Score: {{cp.lessonAssetIdToProgress[17058].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17058].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - What is the Age of Our Sun? Score: {{cp.lessonAssetIdToProgress[36468].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36468].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Types of Stars by Size, Color and Life Cycle Score: {{cp.lessonAssetIdToProgress[2958].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2958].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is a Main Sequence Star? Score: {{cp.lessonAssetIdToProgress[20934].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20934].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Types of Star Clusters Score: {{cp.lessonAssetIdToProgress[20935].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20935].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What Are Binary Stars? Score: {{cp.lessonAssetIdToProgress[21492].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21492].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Antares: Star & Facts Score: {{cp.lessonAssetIdToProgress[4552].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4552].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Brown Dwarf Star: Definition & Overview Score: {{cp.lessonAssetIdToProgress[9454].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9454].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Protostar: Definition, Formation & Facts Score: {{cp.lessonAssetIdToProgress[9478].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9478].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What is a Neutron Star? - Mass, Density & Weight Score: {{cp.lessonAssetIdToProgress[4548].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4548].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - How to Find the Size of a Star Score: {{cp.lessonAssetIdToProgress[20938].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20938].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Measuring The Distance to a Star Score: {{cp.lessonAssetIdToProgress[20939].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20939].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Brightness Of Stars Score: {{cp.lessonAssetIdToProgress[20941].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20941].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Relating a Star's Brightness to Luminosity Score: {{cp.lessonAssetIdToProgress[20942].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20942].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Determining the Temperature of a Star Score: {{cp.lessonAssetIdToProgress[21188].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21188].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Spectroscopy and the Chemical Characteristics of Stars Score: {{cp.lessonAssetIdToProgress[21195].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21195].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Kirchhoff's Laws and Star Spectra Score: {{cp.lessonAssetIdToProgress[21194].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21194].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Doppler Effect and Star Spectra Score: {{cp.lessonAssetIdToProgress[21491].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21491].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - How Stars Generate Energy Score: {{cp.lessonAssetIdToProgress[20944].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20944].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Forces Keeping Stars in a Stable Equilibrium Score: {{cp.lessonAssetIdToProgress[20946].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20946].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Electron Transitions & Spectral Lines Score: {{cp.lessonAssetIdToProgress[32375].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32375].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Using the Magnitude Scale to Compare Star Brightness Score: {{cp.lessonAssetIdToProgress[32682].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32682].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - The Spectral Sequence and Temperature Score: {{cp.lessonAssetIdToProgress[20945].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20945].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Stars' Luminosity Classes & Stellar Classifications Score: {{cp.lessonAssetIdToProgress[35733].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35733].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Uses of the Balmer Thermometer in Astronomy Score: {{cp.lessonAssetIdToProgress[35734].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35734].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Spectroscopic Parallax: Definition & Uses Score: {{cp.lessonAssetIdToProgress[35735].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35735].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Relationship Between a Star's Mass, Luminosity, & Density Score: {{cp.lessonAssetIdToProgress[35736].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35736].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - Brown Dwarfs: L, T, & Y Dwarfs Score: {{cp.lessonAssetIdToProgress[37320].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[37320].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - What is the Interstellar Medium? Score: {{cp.lessonAssetIdToProgress[20948].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20948].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Young Stars & Stellar Associations Score: {{cp.lessonAssetIdToProgress[35737].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35737].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Emission, Dark, and Reflection Nebulae Score: {{cp.lessonAssetIdToProgress[21694].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21694].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - How Does the Interstellar Medium Help Form Stars? Score: {{cp.lessonAssetIdToProgress[20949].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20949].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Young Stellar Objects and Protostellar Disks Score: {{cp.lessonAssetIdToProgress[20950].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20950].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Nuclear Fusion & Star Formation Score: {{cp.lessonAssetIdToProgress[20951].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20951].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Star Formation: Main Sequence, Dwarf & Giant Stars Score: {{cp.lessonAssetIdToProgress[2955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2955].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - H-R Diagram: Definition & Purpose Score: {{cp.lessonAssetIdToProgress[36521].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36521].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - What is a Radiation Zone? Score: {{cp.lessonAssetIdToProgress[36505].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36505].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What is Apparent Brightness? Score: {{cp.lessonAssetIdToProgress[36514].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36514].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - What is a Binary Star System? Score: {{cp.lessonAssetIdToProgress[36475].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[36475].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Supernova and Supergiant Star Life Cycle Score: {{cp.lessonAssetIdToProgress[2961].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2961].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Red Giant, Horizontal & Asymptotic Giant Branch Stars Score: {{cp.lessonAssetIdToProgress[35738].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35738].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Life Cycle of Neutron Stars Score: {{cp.lessonAssetIdToProgress[3209].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3209].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Binary Pulsars & Pulsar Planets Score: {{cp.lessonAssetIdToProgress[35739].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35739].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Cosmic Rays: Definition & Origin Score: {{cp.lessonAssetIdToProgress[35740].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35740].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - What Are White Dwarfs? - Stellar Remnant Characteristics Score: {{cp.lessonAssetIdToProgress[20952].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20952].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Giant Stars and Helium Fusion Score: {{cp.lessonAssetIdToProgress[21693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21693].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How Lower-Main-Sequence Stars Die Score: {{cp.lessonAssetIdToProgress[20955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20955].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - What Are Planetary Nebulae? Score: {{cp.lessonAssetIdToProgress[21695].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21695].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Helium Fusion and Degenerate Electron Pressure Score: {{cp.lessonAssetIdToProgress[21690].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21690].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Binary Systems and Novae Score: {{cp.lessonAssetIdToProgress[26043].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26043].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - How Massive Stars Begin To Die Score: {{cp.lessonAssetIdToProgress[26044].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26044].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - What are Neutron Stars and Supernova Remnants? Score: {{cp.lessonAssetIdToProgress[26300].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26300].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - The Different Types of Supernovae Score: {{cp.lessonAssetIdToProgress[26046].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26046].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Supernova: How Massive Stars Explode Score: {{cp.lessonAssetIdToProgress[26045].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26045].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - What Are Pulsars? Score: {{cp.lessonAssetIdToProgress[20959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20959].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Life Cycle of Black Holes Score: {{cp.lessonAssetIdToProgress[2962].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2962].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - Black Holes: Escape Velocity and the Singularity Score: {{cp.lessonAssetIdToProgress[26441].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26441].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Black Holes: the Event Horizon and Schwarzschild Radius Score: {{cp.lessonAssetIdToProgress[26442].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26442].bestScoreQuestions}}  Take Quiz Optional
Lesson 20 - Finding and Leaping into Black Holes Score: {{cp.lessonAssetIdToProgress[26443].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26443].bestScoreQuestions}}  Take Quiz Optional
Lesson 21 - The Origin of Gamma-ray Bursts Score: {{cp.lessonAssetIdToProgress[20961].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20961].bestScoreQuestions}}  Take Quiz Optional
Lesson 22 - Cosmic Recycling: From Stellar Death to Human Life Score: {{cp.lessonAssetIdToProgress[26463].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26463].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Solar System Overview Score: {{cp.lessonAssetIdToProgress[29079].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29079].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Solar Nebula Theory: Formation of the Solar System Score: {{cp.lessonAssetIdToProgress[29080].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29080].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - What is the Age of the Solar System? Score: {{cp.lessonAssetIdToProgress[29081].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29081].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Condensation Sequences & Planetary Formation Score: {{cp.lessonAssetIdToProgress[29645].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29645].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - What Are Planetesimals? Score: {{cp.lessonAssetIdToProgress[29650].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29650].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - How Do Protoplanets Grow? Score: {{cp.lessonAssetIdToProgress[29647].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29647].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What Is the Jovian Problem? Score: {{cp.lessonAssetIdToProgress[29648].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29648].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Major Characteristics of Planets in the Solar System Score: {{cp.lessonAssetIdToProgress[29084].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29084].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Solar Nebula Theory & Patterns of Planetary Motion Score: {{cp.lessonAssetIdToProgress[29085].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29085].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Theoretical vs. Actual Temperature in our Solar System Score: {{cp.lessonAssetIdToProgress[32374].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32374].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Albedo: Definition, Effect, Equation & Measurement Score: {{cp.lessonAssetIdToProgress[17078].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17078].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Planetesimal: Definition, Theory & Hypothesis Score: {{cp.lessonAssetIdToProgress[4563].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4563].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Inner Planets of the Solar System: Mercury, Venus, Earth & Mars Score: {{cp.lessonAssetIdToProgress[2963].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2963].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Planetary Geology: The Study of Celestial Bodies Score: {{cp.lessonAssetIdToProgress[17922].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17922].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Formation of the Earth: Theories Score: {{cp.lessonAssetIdToProgress[2964].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2964].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Outer Planets of the Solar System: Jupiter, Saturn, Uranus, Neptune Score: {{cp.lessonAssetIdToProgress[2967].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2967].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Jupiter's Important Properties Score: {{cp.lessonAssetIdToProgress[29094].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29094].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Saturn's Major Characteristics Score: {{cp.lessonAssetIdToProgress[29095].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29095].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Uranus's Moons, Rings, Atmosphere & Rotation Score: {{cp.lessonAssetIdToProgress[29096].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29096].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Neptune's Moons, Rings, Atmosphere & Temperature Score: {{cp.lessonAssetIdToProgress[29097].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29097].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Moons of the Jovian Planets Score: {{cp.lessonAssetIdToProgress[29099].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29099].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Asteroids, Meteorites & Comets: Definitions and Characteristics Score: {{cp.lessonAssetIdToProgress[2969].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2969].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - The Formation of Shooting Stars Score: {{cp.lessonAssetIdToProgress[29101].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29101].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Dwarf Planets of the Solar System: Pluto, Eris, Haumea & Ceres Score: {{cp.lessonAssetIdToProgress[2968].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2968].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Planets Around Distant Stars Score: {{cp.lessonAssetIdToProgress[29103].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29103].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Belt-Zone Circulation on Jovian Planets Score: {{cp.lessonAssetIdToProgress[35731].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35731].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Jupiter's & Saturn's Magnetospheres Score: {{cp.lessonAssetIdToProgress[35732].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35732].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Meteoroid: Definition & Facts Score: {{cp.lessonAssetIdToProgress[17073].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17073].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - The Kuiper Belt: Definition, Location & Facts Score: {{cp.lessonAssetIdToProgress[9470].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9470].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - What is a Dwarf Planet? - Definition & Facts Score: {{cp.lessonAssetIdToProgress[9420].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9420].bestScoreQuestions}}  Take Quiz Optional