About This Chapter
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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Other chapters within the OSAT Earth Science (CEOE) (008): Practice & Study Guide course
- CEOE Earth Science: Scientific Inquiry
- CEOE Earth Science: Mathematics, Science & Technology
- CEOE Earth Science: Collecting, Analyzing & Presenting Data
- CEOE Earth Science: Physical & Mathematical Models
- CEOE Earth Science: Laboratory & Equipment Procedures
- CEOE Earth Science: History & Applications
- CEOE Earth Science: Earth Science Phenomena & Social Implications
- CEOE Earth Science: Natural Resources & Human Impact
- CEOE Earth Science: Environmental Ethics & Management
- CEOE Earth Science: The Earth & Moon
- CEOE Earth Science: The Sun
- CEOE Earth Science: Solar System
- CEOE Earth Science: Stars
- CEOE Earth Science: The Universe
- CEOE Earth Science: Atmosphere
- CEOE Earth Science: Weather
- CEOE Earth Science: Weather Forecasting
- CEOE Earth Science: Climate
- CEOE Earth Science: Climate Change
- CEOE Earth Science: Rocks & Minerals
- CEOE Earth Science: Earth's Internal Structure
- CEOE Earth Science: Plate Tectonics
- CEOE Earth Science: Weathering, Erosion & Deposition
- CEOE Earth Science: Geologic History
- CEOE Earth Science: Hydrologic Systems
- CEOE Earth Science: Freshwater Systems
- CEOE Earth Science: Oceans
- OSAT Earth Science (CEOE) (008) Flashcards