Ch 26: The Sun's Structure, Energy & Life Cycle

About This Chapter

If you don't remember the difference between the sun's photosphere and chromosphere, check out this chapter's video lessons. They'll strengthen your understanding of the sun's structure and life cycle as well as how energy is transported within it.

The Sun's Structure, Energy & Life Cycle - Chapter Summary

By watching the videos in this chapter, you'll explore the structure of the sun and its atmosphere. Our instructors take you step-by-step through the stages of the sun's life cycle. The lessons also detail the causes of magnetic solar phenomena, such as solar flares and coronal mass ejections. Once you've studied all the videos, you should be able to do the following:

  • Describe the sun's structure and atmosphere
  • List features of the photosphere and chromosphere
  • Recognize the relationship between the solar corona and solar wind
  • Identify forms of magnetic solar phenomena
  • Define sunspot
  • Explain the Babcock model
  • List the sun's life cycle stages
  • Discuss how energy moves in the sun

In our videos, instructors use their professional experience to make learning about the sun an entertaining experience. The brief videos, full of simplified concepts and fun graphics, contain tags so you can jump to key points during review time. Each lesson also includes a video transcript and a self-assessment quiz. All of these tools are available when you need them on your computer or mobile device.

10 Lessons in Chapter 26: The Sun's Structure, Energy & Life Cycle
Test your knowledge with a 30-question chapter practice test
Structure of the Sun

1. Structure of the Sun

Discover the layers of the sun, including the core, radiative zone, convective zone, photosphere, chromosphere, and corona. Find out which layers you can see from Earth. Investigate what sunspots and solar flares are.

The Sun: Atmosphere & Facts

2. The Sun: Atmosphere & Facts

This lesson will go over what the three layers of our sun's atmosphere are, the sun's surface temperature, chemical composition, radius, and distance from Earth.

Photosphere: Definition & Features

3. Photosphere: Definition & Features

This lesson will go over the sun's photosphere (its visible 'surface'), including where light comes from, how hot it is, and what granules and supergranules are.

Chromosphere: Definition & Properties

4. Chromosphere: Definition & Properties

This lesson will explore some of the interesting features of the second layer of the sun's atmosphere, the chromosphere, including spicules and its pinkish hue.

The Solar Corona & Solar Wind

5. The Solar Corona & Solar Wind

This lesson will define the solar corona and go over how it's involved with the formation of the solar wind and why it's hotter than the photosphere despite being the outermost layer of the sun's atmosphere.

Solar Flares, Solar Prominences & Coronal Mass Ejections

6. Solar Flares, Solar Prominences & Coronal Mass Ejections

This lesson will go over three events caused by magnetic interactions in our Sun. They are prominences, flares, and coronal mass ejections. We'll also touch base on how the latter two can affect life on Earth.

What Are Sunspots?

7. What Are Sunspots?

This lesson will describe for you what sunspots are, where they appear, what parts they have, and why they're dark. It also discusses what differential rotation and a sunspot cycle are.

The Babcock Model of the Sun's Magnetic Cycle

8. The Babcock Model of the Sun's Magnetic Cycle

This lesson will cover a model called the Babcock model or Magnetic-Dynamo model, which helps to explain how many of the features of the solar and sunspot cycle occur.

Stages of the Sun's Life Cycle

9. Stages of the Sun's Life Cycle

Discover our sun, the provider of energy for life on Earth. Learn how the sun was born, how it lives as a main sequence star, how it will age into a red giant and how it will die as a white dwarf.

How Energy Moves Within the Sun

10. How Energy Moves Within the Sun

This lesson will describe how energy is carried from the inner reaches of the Sun, through the radiative zone, then the convective zone, and finally into space.

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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