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Ch 30: Star Types & Life Cycle

About This Chapter

Watch the engaging video lessons in this chapter to learn more about star clusters, binary stars and supernovas as you study star types and their life cycles. Take self-assessment quizzes to gauge your comprehension of the materials.

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.

14 Lessons in Chapter 30: Star Types & Life Cycle
Test your knowledge with a 30-question chapter practice test
Formation, Types & Life Cycles of Stars

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.

Types of Stars by Size, Color and Life Cycle

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.

Types of Star Clusters

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.

Supernova and Supergiant Star Life Cycle

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.

Life Cycle of Black Holes

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.

The Brightness Of Stars

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.

Relating a Star's Brightness to Luminosity

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.

Determining the Temperature of a Star

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.

Spectroscopy and the Chemical Characteristics of Stars

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.

Kirchhoff's Laws and Star Spectra

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.

The Doppler Effect and Star Spectra

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.

How Stars Generate Energy

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!

The Spectral Sequence and Temperature

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.

Using the Magnitude Scale to Compare Star Brightness

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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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