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Introduction to Astronomy: Certificate Program

Course Summary

An Introduction to Astronomy Certificate is just a few short weeks away with this fun course. By simply watching our video lessons and taking our quizzes, you'll earn a certificate you can use to boost your online job profile and show prospective employers your interest in this field.
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28 Chapters in Introduction to Astronomy: Certificate Program

28 chapters in Introduction to Astronomy: Certificate Program

Ch 1. The History of Astronomy {{cp.topicAssetIdToProgress[19965].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
Course Progress Best Score
Lesson 1 - The Nature of Science Score: {{cp.lessonAssetIdToProgress[20925].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20925].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is Scientific Research? Score: {{cp.lessonAssetIdToProgress[20927].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20927].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 Are The Different Kinds of Research Methods? Score: {{cp.lessonAssetIdToProgress[20928].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20928].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Research Variables: Dependent, Independent, Control, Extraneous & Moderator Score: {{cp.lessonAssetIdToProgress[11764].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11764].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 - Occam's Razor as a Scientific Principle Score: {{cp.lessonAssetIdToProgress[20926].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20926].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 - The Bohr Model and Atomic Spectra Score: {{cp.lessonAssetIdToProgress[1612].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1612].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Atomic Number and Mass Number Score: {{cp.lessonAssetIdToProgress[1607].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1607].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What Are Elements? Score: {{cp.lessonAssetIdToProgress[3218].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3218].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Periodic Table: Properties of Groups and Periods Score: {{cp.lessonAssetIdToProgress[1614].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1614].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Understanding the Relationships between Elements, Molecules & Compounds Score: {{cp.lessonAssetIdToProgress[19236].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19236].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Wave Parameters: Wavelength, Amplitude, Period, Frequency & Speed Score: {{cp.lessonAssetIdToProgress[5506].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[5506].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is Light? Score: {{cp.lessonAssetIdToProgress[31423].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31423].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Speed of Light: Distance & Light-Years Score: {{cp.lessonAssetIdToProgress[31428].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31428].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Nature of Light: Origin, Spectrum & Color Frequency Score: {{cp.lessonAssetIdToProgress[4914].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4914].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Electromagnetic Waves: Definition, Sources & Properties Score: {{cp.lessonAssetIdToProgress[4913].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4913].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The 7 Major Regions of the Electromagnetic Spectrum Score: {{cp.lessonAssetIdToProgress[6836].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[6836].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Reflection: Angle of Incidence and Curved Surfaces Score: {{cp.lessonAssetIdToProgress[4915].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4915].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 - Resonance: Definition & Transmission of Waves Score: {{cp.lessonAssetIdToProgress[4916].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4916].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Color: White Light, Reflection & Absorption Score: {{cp.lessonAssetIdToProgress[4918].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4918].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Transparent and Opaque Materials in Electromagnetic Waves Score: {{cp.lessonAssetIdToProgress[4917].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4917].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Wave-Particle Duality: Concept, Explanation & Examples Score: {{cp.lessonAssetIdToProgress[4923].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[4923].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - How Light & Matter Interact Score: {{cp.lessonAssetIdToProgress[31420].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31420].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Blackbody & Blackbody Radiation Theory Score: {{cp.lessonAssetIdToProgress[32371].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32371].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - What Are Wien's Law & the Stefan-Boltzmann Law? Score: {{cp.lessonAssetIdToProgress[32372].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32372].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Calculations with Wien's Law & the Stefan-Boltzmann Law Score: {{cp.lessonAssetIdToProgress[32373].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32373].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - Quantum Physics: Definition, Theories & Topics Score: {{cp.lessonAssetIdToProgress[16919].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[16919].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - What is a Photon? - Definition, Energy & Wavelength Score: {{cp.lessonAssetIdToProgress[10887].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10887].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 - 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 3 - 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 4 - Newton's Laws and Weight, Mass & Gravity Score: {{cp.lessonAssetIdToProgress[2558].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2558].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Law of Universal Gravitation: Definition, Importance & Examples Score: {{cp.lessonAssetIdToProgress[19244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19244].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Newton's Law of Gravitation: Definition & Examples Score: {{cp.lessonAssetIdToProgress[33242].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33242].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Force: Definition and Types Score: {{cp.lessonAssetIdToProgress[14597].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14597].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Work as an Integral Score: {{cp.lessonAssetIdToProgress[33244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33244].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Mass and Weight: Differences and Calculations Score: {{cp.lessonAssetIdToProgress[14595].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14595].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Normal Force: Definition and Examples Score: {{cp.lessonAssetIdToProgress[14605].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14605].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Friction: Definition and Types Score: {{cp.lessonAssetIdToProgress[14606].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14606].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Forces: Balanced and Unbalanced Score: {{cp.lessonAssetIdToProgress[14599].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14599].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Identifying Action and Reaction Force Pairs Score: {{cp.lessonAssetIdToProgress[14604].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14604].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Net Force: Definition and Calculations Score: {{cp.lessonAssetIdToProgress[14600].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14600].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Determining the Individual Forces Acting Upon an Object Score: {{cp.lessonAssetIdToProgress[14602].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14602].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Free-Body Diagrams Score: {{cp.lessonAssetIdToProgress[14598].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14598].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Distinguishing Between Inertia and Mass Score: {{cp.lessonAssetIdToProgress[14594].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14594].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - State of Motion and Velocity Score: {{cp.lessonAssetIdToProgress[14596].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14596].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Determining the Acceleration of an Object Score: {{cp.lessonAssetIdToProgress[14601].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14601].bestScoreQuestions}}  Take Quiz Optional
Lesson 20 - Air Resistance and Free Fall Score: {{cp.lessonAssetIdToProgress[14603].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[14603].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
Lesson 23 - The Acceleration of Gravity: Definition & Formula Score: {{cp.lessonAssetIdToProgress[15070].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15070].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 - Pressure: Definition, Units, and Conversions Score: {{cp.lessonAssetIdToProgress[1651].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1651].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Atmospheric Pressure: Definition & Effects Score: {{cp.lessonAssetIdToProgress[9480].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[9480].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Dalton's Law of Partial Pressures: Calculating Partial & Total Pressures Score: {{cp.lessonAssetIdToProgress[1652].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1652].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - The Ideal Gas Law and the Gas Constant Score: {{cp.lessonAssetIdToProgress[1656].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1656].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - 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
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 - Torque: Concept, Equation & Example 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 - Four Stages of Planetary Development Score: {{cp.lessonAssetIdToProgress[30363].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30363].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Formation of the Earth: Theories Score: {{cp.lessonAssetIdToProgress[2964].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2964].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere Score: {{cp.lessonAssetIdToProgress[13471].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13471].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Interactions of Earth's Spheres: Purpose and Examples Score: {{cp.lessonAssetIdToProgress[13472].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13472].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Major Components of the Atmosphere Score: {{cp.lessonAssetIdToProgress[12472].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12472].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Structure of the Atmosphere Score: {{cp.lessonAssetIdToProgress[12473].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12473].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The General Circulation of the Atmosphere Score: {{cp.lessonAssetIdToProgress[11547].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[11547].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Dynamic Earth: Internal & External Forces that Shape Earth's Surface Score: {{cp.lessonAssetIdToProgress[2520].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2520].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Earth's Internal Layers: Crust, Mantle & Core Score: {{cp.lessonAssetIdToProgress[13473].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13473].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - How Scientists Study Earth's Interior Structure Score: {{cp.lessonAssetIdToProgress[13475].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13475].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - 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 12 - Seismic Wave: Definition, Types & Frequency Score: {{cp.lessonAssetIdToProgress[17048].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17048].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Subduction Zone: Definition, Location & Example Score: {{cp.lessonAssetIdToProgress[17045].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17045].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 - Factors Involved in Climate Change Score: {{cp.lessonAssetIdToProgress[45290].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[45290].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Natural Factors That Determine a Region's Climate Score: {{cp.lessonAssetIdToProgress[2522].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2522].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Global Warming: Atmospheric Causes and Effect on Climate Score: {{cp.lessonAssetIdToProgress[2523].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2523].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Ozone Layer: Importance and the Harmful Effects of Thinning Score: {{cp.lessonAssetIdToProgress[10323].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10323].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Greenhouse Gases and the Enhanced Greenhouse Effect Score: {{cp.lessonAssetIdToProgress[10321].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10321].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Causes of Glaciation Score: {{cp.lessonAssetIdToProgress[13577].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13577].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Four Kinds of Trajectories for Celestial Objects Score: {{cp.lessonAssetIdToProgress[32376].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32376].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Elliptical Orbits: Periods & Speeds Score: {{cp.lessonAssetIdToProgress[33245].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33245].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Eccentricity & Orbits of Planets Score: {{cp.lessonAssetIdToProgress[33278].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33278].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Center of Mass, The Barycenter & Orbital Motion Score: {{cp.lessonAssetIdToProgress[35728].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35728].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Circular Velocity & Escape Velocity Score: {{cp.lessonAssetIdToProgress[35729].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35729].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - How Orbits Are Influenced by Gravity & Energy Score: {{cp.lessonAssetIdToProgress[31429].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31429].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Kepler's Laws, Ellipses, and Eccentricity Score: {{cp.lessonAssetIdToProgress[37319].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[37319].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Planets of the Solar System: Orbits & Visibility Score: {{cp.lessonAssetIdToProgress[35730].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35730].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Free Fall Physics Practice Problems Score: {{cp.lessonAssetIdToProgress[15068].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[15068].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Measuring Objects in the Sky: Angular Size & Distance Score: {{cp.lessonAssetIdToProgress[30366].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30366].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Important Points on the Celestial Sphere Score: {{cp.lessonAssetIdToProgress[31227].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31227].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Cycle of the Seasons in Astronomy Score: {{cp.lessonAssetIdToProgress[32545].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32545].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Geography of the Four Seasons Score: {{cp.lessonAssetIdToProgress[29872].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29872].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Horizon Coordinate System Score: {{cp.lessonAssetIdToProgress[31228].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31228].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Equatorial Coordinate System Score: {{cp.lessonAssetIdToProgress[31229].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31229].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What is Precession? Score: {{cp.lessonAssetIdToProgress[31231].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31231].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Lunar Eclipse: Definition & Types Score: {{cp.lessonAssetIdToProgress[31124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31124].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - What Is a Solar Eclipse? Score: {{cp.lessonAssetIdToProgress[31125].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31125].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Annular Eclipse: The Changing Size of the Moon Score: {{cp.lessonAssetIdToProgress[31126].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31126].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - How Can We Predict An Eclipse? Score: {{cp.lessonAssetIdToProgress[31230].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31230].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Why the Sun Changes Color Score: {{cp.lessonAssetIdToProgress[30368].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30368].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Magnetosphere: Definition & Facts Score: {{cp.lessonAssetIdToProgress[32370].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32370].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - How Gravity, the Moon & the Sun Influence Tides Score: {{cp.lessonAssetIdToProgress[31430].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31430].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Tidal Friction: Effects on Earth & the Moon Score: {{cp.lessonAssetIdToProgress[31431].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31431].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 - Lunar Geology: Types of Moon Rocks Score: {{cp.lessonAssetIdToProgress[30369].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30369].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Moon's Atmosphere Score: {{cp.lessonAssetIdToProgress[30370].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30370].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - How Earth & the Sun Affect the Phases of the Moon Score: {{cp.lessonAssetIdToProgress[31121].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31121].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Moon Phases: Names & Sequence Score: {{cp.lessonAssetIdToProgress[31122].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31122].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Motion of the Moon: Sidereal Month vs. Synodic Month Score: {{cp.lessonAssetIdToProgress[31123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31123].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Predicting When The Moon Will Rise and Set Score: {{cp.lessonAssetIdToProgress[30372].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30372].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 - The Sun: Atmosphere & Facts Score: {{cp.lessonAssetIdToProgress[31432].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31432].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Photosphere: Definition & Features Score: {{cp.lessonAssetIdToProgress[32176].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32176].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Chromosphere: Definition & Properties Score: {{cp.lessonAssetIdToProgress[32177].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32177].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Solar Corona & Solar Wind Score: {{cp.lessonAssetIdToProgress[32178].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32178].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Solar Flares, Solar Prominences & Coronal Mass Ejections Score: {{cp.lessonAssetIdToProgress[32377].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32377].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Helioseismology & the Heliosphere Score: {{cp.lessonAssetIdToProgress[32179].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32179].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Are Sunspots? Score: {{cp.lessonAssetIdToProgress[32180].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32180].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Why Do Sunspots Occur? Score: {{cp.lessonAssetIdToProgress[32181].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32181].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Babcock Model of the Sun's Magnetic Cycle Score: {{cp.lessonAssetIdToProgress[32182].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32182].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Stages of the Sun's Life Cycle Score: {{cp.lessonAssetIdToProgress[2959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2959].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - How Energy Moves Within the Sun Score: {{cp.lessonAssetIdToProgress[32378].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32378].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 - Solar Nebula Theory & Patterns of Planetary Motion Score: {{cp.lessonAssetIdToProgress[29085].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29085].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 is the Age of the Solar System? Score: {{cp.lessonAssetIdToProgress[29081].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29081].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - What Are Planetesimals? Score: {{cp.lessonAssetIdToProgress[29650].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29650].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - How Do Protoplanets Grow? Score: {{cp.lessonAssetIdToProgress[29647].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29647].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Is the Jovian Problem? Score: {{cp.lessonAssetIdToProgress[29648].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29648].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Major Characteristics of Planets in the Solar System Score: {{cp.lessonAssetIdToProgress[29084].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29084].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
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 - Outer Planets of the Solar System: Jupiter, Saturn, Uranus, Neptune Score: {{cp.lessonAssetIdToProgress[2967].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2967].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Jupiter's Important Properties Score: {{cp.lessonAssetIdToProgress[29094].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29094].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Saturn's Major Characteristics Score: {{cp.lessonAssetIdToProgress[29095].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29095].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Belt-Zone Circulation on Jovian Planets Score: {{cp.lessonAssetIdToProgress[35731].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35731].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Jupiter's & Saturn's Magnetospheres Score: {{cp.lessonAssetIdToProgress[35732].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35732].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 - Planetary Geology: The Study of Celestial Bodies Score: {{cp.lessonAssetIdToProgress[17922].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17922].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Satellite Formation in Our Solar System Score: {{cp.lessonAssetIdToProgress[29945].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29945].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Moons of the Jovian Planets Score: {{cp.lessonAssetIdToProgress[29099].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29099].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Tidal Forces & Heat Transfer on Jovian Satellites Score: {{cp.lessonAssetIdToProgress[29975].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29975].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Asteroids, Meteorites & Comets: Definitions and Characteristics Score: {{cp.lessonAssetIdToProgress[2969].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2969].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Meteoroids: Origin & Orbits Score: {{cp.lessonAssetIdToProgress[30146].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30146].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Formation of Shooting Stars Score: {{cp.lessonAssetIdToProgress[29101].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29101].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Meteorite Classifications & Characteristics Score: {{cp.lessonAssetIdToProgress[30145].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30145].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Asteroids: Origin & Properties Score: {{cp.lessonAssetIdToProgress[30147].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30147].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Comets: Origin & Properties Score: {{cp.lessonAssetIdToProgress[30148].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30148].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What Are Trans-Neptunian Objects? Score: {{cp.lessonAssetIdToProgress[30144].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30144].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Dwarf Planets of the Solar System: Pluto, Eris, Haumea & Ceres Score: {{cp.lessonAssetIdToProgress[2968].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2968].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Kirchhoff's Laws and Star Spectra Score: {{cp.lessonAssetIdToProgress[21194].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21194].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Electron Transitions & Spectral Lines Score: {{cp.lessonAssetIdToProgress[32375].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32375].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Doppler Effect and Star Spectra Score: {{cp.lessonAssetIdToProgress[21491].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21491].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Measuring The Distance to a Star Score: {{cp.lessonAssetIdToProgress[20939].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20939].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Brightness Of Stars Score: {{cp.lessonAssetIdToProgress[20941].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20941].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Relating a Star's Brightness to Luminosity Score: {{cp.lessonAssetIdToProgress[20942].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20942].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Using the Magnitude Scale to Compare Star Brightness Score: {{cp.lessonAssetIdToProgress[32682].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32682].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Determining the Temperature of a Star Score: {{cp.lessonAssetIdToProgress[21188].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21188].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - The Spectral Sequence and Temperature Score: {{cp.lessonAssetIdToProgress[20945].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20945].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Stars' Luminosity Classes & Stellar Classifications Score: {{cp.lessonAssetIdToProgress[35733].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35733].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - How to Find the Size of a Star Score: {{cp.lessonAssetIdToProgress[20938].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20938].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Spectroscopy and the Chemical Characteristics of Stars Score: {{cp.lessonAssetIdToProgress[21195].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21195].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - Uses of the Balmer Thermometer in Astronomy Score: {{cp.lessonAssetIdToProgress[35734].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35734].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - Spectroscopic Parallax: Definition & Uses Score: {{cp.lessonAssetIdToProgress[35735].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35735].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Relationship Between a Star's Mass, Luminosity, & Density Score: {{cp.lessonAssetIdToProgress[35736].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35736].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Brown Dwarfs: L, T, & Y Dwarfs Score: {{cp.lessonAssetIdToProgress[37320].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[37320].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Star Formation: Main Sequence, Dwarf & Giant Stars Score: {{cp.lessonAssetIdToProgress[2955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2955].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is the Interstellar Medium? Score: {{cp.lessonAssetIdToProgress[20948].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20948].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 - Young Stars & Stellar Associations Score: {{cp.lessonAssetIdToProgress[35737].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35737].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Nuclear Fusion & Star Formation Score: {{cp.lessonAssetIdToProgress[20951].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20951].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Forces Keeping Stars in a Stable Equilibrium Score: {{cp.lessonAssetIdToProgress[20946].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20946].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - How Stars Generate Energy Score: {{cp.lessonAssetIdToProgress[20944].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20944].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 - Giant Stars and Helium Fusion Score: {{cp.lessonAssetIdToProgress[21693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21693].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Helium Fusion and Degenerate Electron Pressure Score: {{cp.lessonAssetIdToProgress[21690].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21690].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - How Lower-Main-Sequence Stars Die Score: {{cp.lessonAssetIdToProgress[20955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20955].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - What Are Planetary Nebulae? Score: {{cp.lessonAssetIdToProgress[21695].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21695].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Red Giant, Horizontal & Asymptotic Giant Branch Stars Score: {{cp.lessonAssetIdToProgress[35738].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35738].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What Are White Dwarfs? - Stellar Remnant Characteristics Score: {{cp.lessonAssetIdToProgress[20952].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20952].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Binary Systems and Novae Score: {{cp.lessonAssetIdToProgress[26043].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26043].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - How Massive Stars Begin To Die Score: {{cp.lessonAssetIdToProgress[26044].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26044].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Supernova: How Massive Stars Explode Score: {{cp.lessonAssetIdToProgress[26045].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26045].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - The Different Types of Supernovae Score: {{cp.lessonAssetIdToProgress[26046].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26046].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Life Cycle of Neutron Stars Score: {{cp.lessonAssetIdToProgress[3209].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3209].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 - What Are Pulsars? Score: {{cp.lessonAssetIdToProgress[20959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20959].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Binary Pulsars & Pulsar Planets Score: {{cp.lessonAssetIdToProgress[35739].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35739].bestScoreQuestions}}  Take Quiz Optional
Lesson 16 - Life Cycle of Black Holes Score: {{cp.lessonAssetIdToProgress[2962].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2962].bestScoreQuestions}}  Take Quiz Optional
Lesson 17 - Black Holes: Escape Velocity and the Singularity Score: {{cp.lessonAssetIdToProgress[26441].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26441].bestScoreQuestions}}  Take Quiz Optional
Lesson 18 - Black Holes: the Event Horizon and Schwarzschild Radius Score: {{cp.lessonAssetIdToProgress[26442].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26442].bestScoreQuestions}}  Take Quiz Optional
Lesson 19 - Finding and Leaping into Black Holes Score: {{cp.lessonAssetIdToProgress[26443].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26443].bestScoreQuestions}}  Take Quiz Optional
Lesson 20 - The Origin of Gamma-ray Bursts Score: {{cp.lessonAssetIdToProgress[20961].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20961].bestScoreQuestions}}  Take Quiz Optional
Lesson 21 - Cosmic Recycling: From Stellar Death to Human Life Score: {{cp.lessonAssetIdToProgress[26463].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26463].bestScoreQuestions}}  Take Quiz Optional
Lesson 22 - Cosmic Rays: Definition & Origin Score: {{cp.lessonAssetIdToProgress[35740].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35740].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Galaxy Formation: Spiral, Elliptical & Irregular Galaxies Score: {{cp.lessonAssetIdToProgress[2957].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2957].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Formation of the Milky Way Galaxy Score: {{cp.lessonAssetIdToProgress[27124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27124].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - How Our Galaxy Was Discovered Score: {{cp.lessonAssetIdToProgress[35741].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35741].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Structure of Our Galaxy Score: {{cp.lessonAssetIdToProgress[26454].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26454].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Nucleus of a Galaxy Score: {{cp.lessonAssetIdToProgress[26456].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26456].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Spiral Arms of the Milky Way Galaxy Score: {{cp.lessonAssetIdToProgress[27040].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27040].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Density Wave Theory & Spiral Galaxies Score: {{cp.lessonAssetIdToProgress[35742].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35742].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Population I and Population II Stars Score: {{cp.lessonAssetIdToProgress[27123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27123].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - The Mass of Our Galaxy Score: {{cp.lessonAssetIdToProgress[26873].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26873].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Collision & Assembly of Galaxies Score: {{cp.lessonAssetIdToProgress[27693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27693].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Distribution of Galaxy Properties Along the Hubble Tuning Fork Score: {{cp.lessonAssetIdToProgress[26459].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26459].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Types of Spiral Galaxies Score: {{cp.lessonAssetIdToProgress[26457].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26457].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Galaxy Collisions: Ring & Elliptical Galaxies Score: {{cp.lessonAssetIdToProgress[35743].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35743].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Links in the Cosmic Distance Ladder Score: {{cp.lessonAssetIdToProgress[26465].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26465].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Hubble's Law & Hubble's Constant Score: {{cp.lessonAssetIdToProgress[26467].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26467].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Measuring the Properties of Distant Galaxies Score: {{cp.lessonAssetIdToProgress[27583].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27583].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Characteristics of Stars' Orbits in the Galaxy Score: {{cp.lessonAssetIdToProgress[26460].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26460].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Dark Matter & Gravitational Lensing Score: {{cp.lessonAssetIdToProgress[27917].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27917].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What Are the Different Types of Galaxy Clusters? Score: {{cp.lessonAssetIdToProgress[27692].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27692].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - What are Active Galactic Nuclei? Score: {{cp.lessonAssetIdToProgress[27893].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27893].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Seyfert Galaxies & Double-Lobed Radio Galaxies Score: {{cp.lessonAssetIdToProgress[35744].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35744].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - What Are Quasars? Score: {{cp.lessonAssetIdToProgress[27694].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27694].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - What Are Supermassive Black Holes? Score: {{cp.lessonAssetIdToProgress[26470].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26470].bestScoreQuestions}}  Take Quiz Optional
Lesson 15 - Active Galactic Nuclei & the Unified Model Score: {{cp.lessonAssetIdToProgress[35745].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35745].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Solar System, Galaxy, & Universe: Definitions & Difference Score: {{cp.lessonAssetIdToProgress[28124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28124].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Origins of the Universe: The Big Bang and Expanding & Contracting Universes Score: {{cp.lessonAssetIdToProgress[2953].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2953].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Olbers' Paradox & Cosmic Expansion: Nature of the Universe Score: {{cp.lessonAssetIdToProgress[28123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28123].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Observable Universe vs. the Entire Universe Score: {{cp.lessonAssetIdToProgress[28128].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28128].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Steady State Theory vs. the Big Bang Theory Score: {{cp.lessonAssetIdToProgress[28125].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28125].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion Score: {{cp.lessonAssetIdToProgress[2954].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2954].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Photons, Particle Soup & Nucleosynthesis Score: {{cp.lessonAssetIdToProgress[28122].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28122].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - The Evolution of the Early Universe