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Ch 43: Ohio Graduation Test: Astronomy Basics

About This Chapter

Begin your review of space science with the lessons in our Astronomy Basics chapter. Expand and reinforce your understanding of our solar system, our own and other galaxies, and the known universe as you study for the Ohio Graduation Test.

Ohio Graduation Test: Astronomy Basics - Chapter Summary

Check out this chapter if you want to prepare for the Ohio Graduation Test. These lessons take you, figuratively at least, to the stars and beyond. As you work through them, you will review the material shown in the list below:

  • Overview of the universe, galaxies and the solar system
  • Expanding universe and Big Bang theories
  • Types of galaxies and how galaxies were formed
  • Structure and formation of the Milky Way Galaxy
  • The solar system: inner and outer planets
  • Earth's moon: formation and phases
  • Our Sun: structure, composition and atmosphere
  • Stars and their formation

As a high school student preparing for graduation, you have great demands on your time. This study guide combines a number of time-saving features that will provide you with comprehensive information in an efficient, effective format. Our videos never last more than ten minutes, and by using the timeline feature, you can skip directly to any part of a lesson that you want to view without necessarily having to watch from the beginning. Links between the quizzes and the videos as well as highlighted vocabulary in the transcripts make referral back and forth quick and easy.

Ohio Graduation Test: Astronomy Basics Chapter Objectives

The Ohio Graduation Test is one of the requisites for a high school diploma, and it can be administered as early as 10th grade or any time thereafter. It is a paper-and-pencil test that assesses mathematics, social studies, science, reading and writing knowledge and skills. This chapter addresses the science section, which contains 38 total questions. Questions on the Ohio Graduation Test may be multiple-choice, short answer or extended answer.

14 Lessons in Chapter 43: Ohio Graduation Test: Astronomy Basics
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.

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

2. 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.

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.

The Structure of Our Galaxy

5. 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.

Solar System Overview

6. Solar System Overview

This lesson will go over the major aspects of our solar system, including the sun, planets, moons, asteroids, comets, meteors, meteorites, and meteoroids.

Inner Planets of the Solar System: Mercury, Venus, Earth & Mars

7. Inner Planets of the Solar System: Mercury, Venus, Earth & Mars

Take a tour of the four inner planets: Mercury, Venus, Earth and Mars. Known as the terrestrial planets, find out what makes each of them unique and how they are different from the outer planets, the gas giants.

Outer Planets of the Solar System: Jupiter, Saturn, Uranus, Neptune

8. Outer Planets of the Solar System: Jupiter, Saturn, Uranus, Neptune

Take a tour of the outer planets of our solar system: Jupiter, Saturn, Uranus, and Neptune. Find out what makes each of these gas giants unique and learn about Pluto, a dwarf planet.

Formation of the Moon: Theories

9. Formation of the Moon: Theories

Explore the four major theories on the formation of the Moon. The theories include the fission theory, capture theory, condensation theory and giant impact theory. Also look at both information supporting and flaws found in these theories.

Moon Phases: Names & Sequence

10. Moon Phases: Names & Sequence

This lesson will go over the phases of the moon. The full moon, new moon, waxing, waning, and gibbous phases and the order in which they occur and what they look like are discussed.

Structure of the Sun

11. 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

12. 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.

Types of Stars by Size, Color and Life Cycle

13. 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.

Star Formation: Main Sequence, Dwarf & Giant Stars

14. Star Formation: Main Sequence, Dwarf & Giant Stars

Learn how stars are born, beginning with a protostar. Then learn about stars in later stages of life, including main sequence stars, brown dwarfs, red giants, and black holes.

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.
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Other Chapters

Other chapters within the Ohio Graduation Test: Study Guide & Practice course

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