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Ch 14: CEOE Earth Science: Galaxies

About This Chapter

Learn about galaxies in preparation for the CEOE Earth Science exam. Watch video lessons and take self-assessment quizzes that cover different kinds of galaxy clusters and much more.

CEOE Earth Science: Galaxies - Chapter Summary

The lessons in this chapter prepare you for a number of questions you could see on the CEOE Earth Science test, including any that concern different types of galaxies and the discovery of our galaxy. By the end of this chapter, you should also be ready for any questions on:

  • How the Milky Way galaxy was formed
  • The structure and mass of the Milky Way
  • Planetary geology
  • Historical approaches to the study of space
  • Measurement of distant galaxies

Video lessons are accompanied by transcripts, and important terms are indicated with bold print. You can easily revisit key points in the videos using the Timeline, and test your understanding and retention of the material with self-assessment quizzes.

CEOE Earth Science: Galaxies Chapter Objectives

The CEOE Earth Science exam is used to see if you have the level of subject knowledge that makes you qualified to teach earth science in Oklahoma. The test covers foundations of scientific inquiry, space systems, atmospheric systems, geological systems, and water systems. The material covered by the Galaxies chapter pertains to the space systems section of the test, which constitutes about 20% of the entire exam. All the questions in the space systems section are multiple choice, and the test comes in a computer-based format.

11 Lessons in Chapter 14: CEOE Earth Science: Galaxies
Test your knowledge with a 30-question chapter practice test
Solar System, Galaxy, & Universe: Definitions & Difference

1. Solar System, Galaxy, & Universe: Definitions & Difference

Want to learn what the universe, galaxy, and solar system are as well as some cool facts about each one? This lesson will give you an overview of what these three things are in a relatable fashion.

What Are the Different Types of Galaxy Clusters?

2. What Are the Different Types of Galaxy Clusters?

This lesson will define five different types of clusters: rich, poor, irregular, regular, and superclusters. We'll also find out what voids are and what the Local Group is.

Galaxy Formation: Spiral, Elliptical & Irregular Galaxies

3. Galaxy Formation: Spiral, Elliptical & Irregular Galaxies

This lesson explains how galaxies form, starting with the Big Bang. You'll also learn about the solar nebula hypothesis and three galaxy types, including spiral, elliptical, and irregular galaxies.

The Formation of the Milky Way Galaxy

4. The Formation of the Milky Way Galaxy

This lesson will explore two hypotheses as to how the Milky Way galaxy formed. These are the top-down and bottom-up hypotheses. We'll also go into what special connection you personally have to all of this.

How Our Galaxy Was Discovered

5. How Our Galaxy Was Discovered

This lesson will outline for you the basics of how the galaxy you live in, the Milky Way Galaxy, was discovered over time. You'll also learn about RR Lyrae and Cepheid variable stars.

The Structure of Our Galaxy

6. The Structure of Our Galaxy

If you ever looked up at the night sky far away from city lights, you would've seen a band of light across the night sky and lots of stars scattered around the rest of the sky. Why? The structure of our galaxy will explain exactly why.

The Mass of Our Galaxy

7. The Mass of Our Galaxy

This lessons explores the estimates and numbers surrounding the mass of the Milky Way Galaxy and how they relate to Keplerian motion, the galactic corona, and dark matter.

Planetary Geology: The Study of Celestial Bodies

8. Planetary Geology: The Study of Celestial Bodies

Planetary geology is a field of geology that explores celestial bodies like planets, moons, comets, and asteroids. Scientists use a variety of advanced techniques and procedures to carry out their research on these distant bodies.

Historical Approaches to Studying the Galaxy & Solar System

9. Historical Approaches to Studying the Galaxy & Solar System

Humans seem to have always been fascinated by the stars, but how did they understand the cosmos? In this lesson, we'll explore several approaches to astronomy across history, and see how they changed with time.

Measuring the Properties of Distant Galaxies

10. Measuring the Properties of Distant Galaxies

This lesson will go over a couple of methods astronomers use to find out the properties of a distant galaxy, namely, its distance away from us and its mass.

How to Infer Scales of the Solar System, Galaxy & Universe

11. How to Infer Scales of the Solar System, Galaxy & Universe

The physical scales used to measure time and space in the solar system, galaxy, and universe vary widely. Inferences can simplify comparisons and give scientists an idea of the size of objects.

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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