Ch 21: OAE Earth & Space Science: The Universe

About This Chapter

Watch these engaging videos to reinforce your understanding of the origins, nature, and elements of the universe. These lessons were designed to help you prepare for the OAE Earth and Space Science exam.

OAE Earth & Space Science: The Universe - Chapter Summary

Use the lessons in this chapter to prepare for question on the Ohio Assessments for Educators (OAE) Earth and Space Science exam about the universe. These lessons are taught by expert instructors whose goal is to prepare you for exam questions about:

  • Expanding vs. contracting universes
  • Differences between the Steady State theory and the Big Bang theory
  • Olbers' paradox
  • Differences between the observable universe and the entire universe
  • Flat, open and close models of the universe
  • The curvature of the universe
  • Supermassive black holes, quasars and supernovas
  • WIMPs and dark matter

As you watch these lessons, be sure to send any questions you have about these topics to our instructors so that they can clarify any areas of confusion. Further reinforce your comprehension of the material by completing the lesson quizzes. Video tags allow you to review specific topics within the videos while skipping over topics ones you've already mastered, while lesson transcripts will present you with an alternative written review the lessons.

OAE Earth & Space Science: The Universe Chapter Objectives

Earth and space science educators seeking certification in the state of Ohio take the OAE Earth and Space Science exam to demonstrate their mastery over their field. This computer-based exam involves answering 150 multiple-choice questions in a 180- minute testing session. Of the questions on this exam, 19% are on the study of astronomy. Questions in this section may ask you about the universe, black holes, dark matter, supernovas and quasars. Use this chapter to review the elements and nature of the universe so that you will be able to accurately answer these questions on test day.

10 Lessons in Chapter 21: OAE Earth & Space Science: The Universe
Test your knowledge with a 30-question chapter practice test
Origins of the Universe: The Big Bang and Expanding & Contracting Universes

1. Origins of the Universe: The Big Bang and Expanding & Contracting Universes

Students will learn the origins of the universe, the Big Bang theory, the timeline of the universe, how the universe is still expanding to this day, and what astronomers expect the universe to look like in the future.

The Steady State Theory vs. the Big Bang Theory

2. The Steady State Theory vs. the Big Bang Theory

Did you know that the Big Bang wasn't always a well-accepted theory of our universe? There was a competing theory called the Steady State theory. Find out what it was all about and why its proponent actually helped name the Big Bang theory.

Olbers' Paradox & Cosmic Expansion: Nature of the Universe

3. Olbers' Paradox & Cosmic Expansion: Nature of the Universe

Why is the night sky dark if there are so many stars in the universe? It used to be thought our universe had several properties that we now know not to be true. This lesson will explain what all that means and why the night sky isn't as bright as the sun.

The Observable Universe vs. the Entire Universe

4. The Observable Universe vs. the Entire Universe

This lesson will tie in the concepts of our observable universe, redshift, and the cosmic light horizon to explain why we cannot see the entire universe.

Three Models of the Universe: Flat, Open & Closed

5. Three Models of the Universe: Flat, Open & Closed

This lesson will describe three models of the universe, including closed, open, and flat, as well as critical density and which model is most likely the correct one.

The Universe's Curvature, Age & Fate

6. The Universe's Curvature, Age & Fate

What is the age of our universe? What shape does it take? What determines the fate of our universe and what is this fate? This lesson will tell you all of this and more!

What Are Supermassive Black Holes?

7. What Are Supermassive Black Holes?

This lesson will explain to you what a supermassive black hole is, where they're found, how large they are, how they likely formed, and what they emit into space.

What Are Quasars?

8. What Are Quasars?

This lesson will go over the odd-sounding term quasar. You'll learn how the term appeared, the different kinds of quasars, and what they are actually believed to be.

The Different Types of Supernovae

9. The Different Types of Supernovae

There are different types of supernovae, and this lesson will tell you what they are and what their differences are. We'll mainly focus on type II supernovae and types Ia and Ib supernovae.

Hot & Cold Dark Matter & WIMPs

10. Hot & Cold Dark Matter & WIMPs

Neutrinos, neutralinos, axinos, gravitinos, and what the inos! Dark matter is a crazy thing and there are many different kinds of dark matter. This lesson will go over what they are and what they might be made of.

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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