About This Chapter
Astronomical Laws & Measurements - Chapter Summary
Whether you're looking for a quick refresher of Kepler's laws or want to get reacquainted with methods of measurement used by astronomers, you've reached the right place! This chapter can get you up to speed on important astronomical laws and measurements and ensure you're able to:
- Provide a description of ellipses, eccentricity and Kepler's first law of planetary motion
- Exhibit knowledge of Newton's laws of motion and universal gravitation
- Share methods astronomers use to measure the properties of distant galaxies
- Explain how astronomers measure the distance to a star
This chapter makes a variety of study resources available in one convenient location and allows you to study anytime your schedule permits. In addition to engaging lessons, benefit from access to self-assessment quizzes and a practice exam that can confirm your understanding of these astronomical laws and measurements. Questions that arise while studying can be submitted to our subject-matter experts via the Dashboard. If you're away from your computer and find time to study, simply hop on your smartphone or tablet to access this chapter.
1. Kepler's Laws, Ellipses, and Eccentricity
This lesson will discuss Kepler's First Law of Planetary Motion; define an ellipse, focus, major axis, semimajor axis, and eccentricity; and explain what they have to do with astronomy.
2. Sir Isaac Newton And Astronomy
This lesson will teach you about Newton's laws of motion and universal gravitation as well as why the moon doesn't fly off into space and why it doesn't crash into the Earth.
3. 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.
4. Measuring The Distance to a Star
This lesson will tell you how astronomers can measure the distance to a star and how it relates to the way surveyors measure distances to landmarks right here on Earth.
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Other chapters within the CSET Science Subtest II Earth and Space Sciences (219): Test Prep & Study Guide course
- Understanding Stars, Solar Systems & Galaxies
- Celestial Bodies of Our Solar System
- Understanding Earth's Formation & Development
- Rocks & Minerals
- Overview of Earth's Systems
- Tectonic Plates, Volcanoes & Earthquakes
- Understanding Water's Role on Earth
- Understanding Earth's Atmosphere, Climate & Weather
- Understanding Human Impact on Earth & Global Climate Change
- California's Natural Resources & Hazards
- CSET Science Subtest 2 Earth & Space Sciences Flashcards