Ch 58: General Science: Earth, Moon & Sun

About This Chapter

Enhance your knowledge of the Earth, moon and sun before sitting for the AEPA General Science examination.. Throughout this chapter, you can learn more by watching the animated video lessons and taking several short quizzes.

AEPA General Science: Earth, Moon and Sun - Chapter Summary

This chapter highlights various aspects of the Earth, the moon and the sun. Strengthen your comprehension along with your ability to teach these topics as you prepare to take the AEPA General Science examination. Watch several engaging video lessons that discuss lunar and solar eclipses, the celestial sphere and the equatorial system. These videos can prepare you for questions related to:

  • Measuring the angular size and distance of objects in the sky
  • Exploring important points on the celestial sphere
  • Explaining the cycles and geography of the Earth's seasons
  • Learning more about the horizon and equatorial coordinate systems
  • Defining precession and magnetosphere as well as lunar, annular and solar eclipses
  • Discovering how eclipses can be predicted
  • Determining why the sun changes color
  • Explaining how tides are affected by the moon, the sun and gravity
  • Exploring tidal friction

This chapter contains several online video lessons that can be watched at your convenience via your mobile device. The narrated videos are between five and ten minutes long, and they're presented to you by seasoned educators. You can prepare for the AEPA General Science examination by reviewing and absorbing the videos' subject matter, submitting your questions for assistance, exploring related courses and taking the brief quizzes.

AEPA General Science - Earth, Moon and Sun Chapter Objectives

Questions pertaining to the interactions between the Earth, the moon and the sun can be found on the Earth and Space Science content domain of the AEPA General Science examination. The content domain is one of four examination domains, and it amounts to 19% of the entire test score. Draw upon your prior knowledge and your review of this chapter while addressing these and other assessment topics. There are 150 multiple-choice questions that span all four of the content domains. Administered by computer, the examination must be completed within three hours.

15 Lessons in Chapter 58: General Science: Earth, Moon & Sun
Test your knowledge with a 30-question chapter practice test
Measuring Objects in the Sky: Angular Size & Distance

1. Measuring Objects in the Sky: Angular Size & Distance

This lesson will teach you about the celestial sphere, angular distance, angular size and diameter, arc minutes, and arc seconds. You'll also learn some neat tricks on how to use your own hands to measure these.

Important Points on the Celestial Sphere

2. Important Points on the Celestial Sphere

This lesson will discuss some important points and lines located on the celestial sphere, including the zenith, nadir, celestial equator, meridian, and north and south celestial poles.

The Cycle of the Seasons in Astronomy

3. The Cycle of the Seasons in Astronomy

This lesson will explain to you why the Earth has different seasons, what the equinoxes and solstices are, their names, and if the distance the Earth is from the Sun influences the seasons.

Geography of the Four Seasons

4. Geography of the Four Seasons

This lesson will explain how the earth's axis and rotation affect seasons. In doing this, it will also highlight the concept of the summer and winter solstices, as well as how seasons vary around the globe.

The Horizon Coordinate System

5. The Horizon Coordinate System

This lesson will describe a celestial coordinate system known as the horizon system or altazimuth system, as well as important terms such as altitude, azimuth, zenith, and angular distance.

The Equatorial Coordinate System

6. The Equatorial Coordinate System

This lesson will teach you about the fundamentals of the equatorial system, including declination, right ascension, the vernal equinox, angular diameter, and celestial equator.

What is Precession?

7. What is Precession?

You've probably heard of the term precession. But what is this really? And what significance does it have to our night sky? This lesson will explain what it is and what it causes.

Lunar Eclipse: Definition & Types

8. Lunar Eclipse: Definition & Types

This lesson will teach you about the lunar eclipse. You'll learn the difference between a penumbral, partial, and total lunar eclipse, and see what totality means with respect to a total lunar eclipse.

What Is a Solar Eclipse?

9. What Is a Solar Eclipse?

This lesson will describe what a solar eclipse is, why it's possible, when a partial or a total one will occur, and what cool effects occur during one.

Annular Eclipse: The Changing Size of the Moon

10. Annular Eclipse: The Changing Size of the Moon

This lesson will explain what an annular eclipse is and why it occurs with respect to the sizes of the Moon, the Sun, and the position of the Moon during its orbit.

How Can We Predict An Eclipse?

11. How Can We Predict An Eclipse?

This lesson will tell you when lunar and solar eclipses are possible, what nodes have to do with it, how long eclipse seasons last, and what the Saros cycle is.

Why the Sun Changes Color

12. Why the Sun Changes Color

The Sun does not change its true color. However, the way we observe the Sun on Earth makes it appear that the sun changes color. Why this is so is outlined in this lesson.

Magnetosphere: Definition & Facts

13. Magnetosphere: Definition & Facts

In this lesson, you'll learn about how the northern lights are formed thanks to the magnetosphere and solar wind. Of course, you'll learn a lot more, including what the Van Allen belts, magnetopause, and magnetotail are.

How Gravity, the Moon & the Sun Influence Tides

14. How Gravity, the Moon & the Sun Influence Tides

This lesson will define tides, the tidal force, neap tide, and spring tide. It will also talk about how the sun, moon, and Earth interact to produce tidal bulges.

Tidal Friction: Effects on Earth & the Moon

15. Tidal Friction: Effects on Earth & the Moon

This lesson will go over the concept of tidal friction, why it occurs, and how all of that has affected Earth's spin and day length, as well as the moon's rotation and distance from Earth.

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

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Other Chapters

Other chapters within the AEPA General Science (NT311): Practice & Study Guide course

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