About This Chapter
Star Types & Life Cycle - Chapter Summary
Use the video lessons in this chapter to take a closer look at star types and their life cycles. Instructors in the lessons introduce you to types of stars in the galaxy by size and color, while examining star clusters and the life cycle of black holes. You'll also examine the supergiant star and its life cycle, as well as what occurs during a supernova. Watching the videos will also offer insight into the formation and brightness of stars. Upon completion of this chapter, you should be able to:
- Relate a star's brightness to luminosity
- Share how scientists determine the temperature of a star
- Detail spectroscopy and chemical characteristics of stars
- Explain Kirchhoff's laws and the Doppler effect
- Discuss how stars generate energy
- Define the spectral sequence
- Describe the magnitude scale to compare star brightness
The comprehensive video lessons in this chapter offer easy-to-understand instruction that allows you to study and review materials at your own pace. Expert instructors present the materials in a fun and entertaining manner, offering step-by-step guidance and engaging visual effects. The lessons also offer self-assessment quizzes designed to test your comprehension of the materials. The quizzes come with links that take you back to specific sections of the videos if you get stuck on a question. You can also access video transcripts if you want a written copy of the lessons. Instructors are available to answer any questions you have about this chapter.
1. Formation, Types & Life Cycles of Stars
After reading this lesson, you will be able to describe how stars form and what form they take as well as describing the common cycles of their lives. A short quiz will follow.
2. Types of Stars by Size, Color and Life Cycle
Learn to identify the different sizes and colors of stars and how they relate to the star life cycle. In this lesson, we'll talk about spectral classification, how many stars there are of each type and the approximate color of the different classes of stars.
3. Types of Star Clusters
Our lesson will explore what star clusters are, the two types of star clusters, and their characteristics and differences as well as how we can figure out their ages using the H-R diagram.
4. Supernova and Supergiant Star Life Cycle
Learn about one of the biggest explosions known to humankind - a supernova. Follow a star's life cycle and learn how a star changes from a red giant to a supernova to a black hole or neutron star.
5. Life Cycle of Black Holes
Learn about black holes, their myths and their reality. Learn how black holes form after stars undergo supernovae and create singularities. Discover how big black holes grow, how scientists find black holes and where black holes are located in the universe.
6. The Brightness Of Stars
This lesson will define and describe important terms related to a star's brightness, including luminosity, intrinsic brightness, apparent brightness, and more.
7. Relating a Star's Brightness to Luminosity
This lesson will explore how luminosity, apparent brightness, and distance are related to one another using the inverse square law. You'll also learn how luminosity can be gauged based on distance and apparent brightness.
8. Determining the Temperature of a Star
This lesson will explain to you the concepts of a spectrum, electromagnetic radiation, the temperature of a faraway star and how that relates to something known as a blackbody curve and Wien's law.
9. Spectroscopy and the Chemical Characteristics of Stars
This lesson will explain how astronomers find out the chemical composition of a distant star using spectral lines and spectroscopy, and how this relates to atoms, electrons, and photons.
10. Kirchhoff's Laws and Star Spectra
This lesson will define for you three laws associated with spectra and how they relate to the composition of stars, as well as how they relate to atoms and wavelengths.
11. The Doppler Effect and Star Spectra
This lesson will outline what the Doppler effect is using a very familiar example, then parlay that knowledge into understanding how the Doppler effect is used in astronomy.
12. How Stars Generate Energy
This lesson will tell you how the sun generates energy, energy that depends on much more than the superficial notion of nuclear fusion. We'll delve deeply into this process by exploring protons, positrons, gamma rays, and a whole lot more!
13. The Spectral Sequence and Temperature
This lesson will talk about spectral classes, spectral types, and the spectral sequence. We will break down each spectral class and point out some important characteristics of each.
14. Using the Magnitude Scale to Compare Star Brightness
This lesson will describe the magnitude scale, apparent brightness, and apparent visual magnitude. It will also teach you how to compare the brightness of stars.
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Other chapters within the MTTC Earth/Space Science (020): Practice & Study Guide course
- Foundations of Earth Science
- Basics of Inquiry & Research in Earth & Space Science
- Scientific Data & Calculations
- Laboratory Equipment, Safety & Procedures
- Scientific Tools Used in Earth & Space Science
- Earth's Formation & Structure
- Plate Tectonics, Continental Drift & Ocean Formations
- Understanding Earthquakes
- Rocks & Minerals
- Effect of Weathering, Erosion & Deposition
- Geologic Time & Earth's History
- Environmental Impacts of Earth's Natural Resources
- Properties of Water & the Hydrologic Cycle
- Ocean Formation & Characteristics
- Earth's Groundwater
- Earth's Fresh Water
- Global Water Issues
- The Structure & Characteristics of Earth's Atmosphere
- Wind, Air Masses & ENSO in Atmospheric Circulation
- Clouds, Condensation & Precipitation
- Weather Conditions, Patterns & Severe Weather
- Climate Change & Air Pollution
- The Sun-Earth-Moon System
- Solar Radiation, Energy & Light
- Celestial Orbit Characteristics
- Formation of the Solar System
- Celestial Bodies in the Solar System
- Kepler & Newton's Laws of Motion
- Origins & Theories of the Universe
- Introduction to the History of Astronomy
- MTTC Earth/Space Science Flashcards