Ch 51: Praxis Biology & General Science: Black Holes & Planets

About This Chapter

Use our video lessons and quizzes to prepare for earth and space science questions found on the Praxis II Biology and General Science exam. Instructors can show you how to identify the differences between inner, outer and dwarf planets and distinguish between asteroids, meteorites and comets.

Praxis II Biology & General Science: Astronomy II - Chapter Summary

A handful of Praxis II Biology and General Science questions require you to be familiar with the characteristics of objects appearing in our solar system, such as planets, black holes and comets. You can use this chapter's video lessons to review these areas as well as the topics listed below:

  • Life cycle of black holes
  • The solar system's inner, outer and dwarf planets
  • Theories on the formation of the Earth and moon
  • Planetary predictors of extraterrestrial life
  • Asteroids, meteorites and comets
  • Space exploration

Instructors teaching these video lessons present the material in a way that makes it approachable. There are even video tags that allow you to jump to main points and transcripts that make it easy to reference lesson summaries and key terms. When you're ready to assess your understanding of these astronomy concepts, you can take each lesson's corresponding quizzes as many times as necessary.

Objectives of the Praxis II Biology & General Science: Astronomy II Course

In some states, a passing score on the Praxis II Biology and General Science exam is one of the prerequisites for a secondary school teaching license in these content areas. The test consists of 120 multiple-choice questions designed to assess your knowledge of biology, ecology, chemistry and physics, among other subjects.

Video lessons and quizzes found in the Astronomy II chapter can help prepare you for the 12 or so questions included on the Earth and Space Science portion of the exam, which tests your familiarity with such topics as planets in the solar system and the significance of space exploration.

8 Lessons in Chapter 51: Praxis Biology & General Science: Black Holes & Planets
Test your knowledge with a 30-question chapter practice test
Life Cycle of Black Holes

1. Life Cycle of Black Holes

Learn about black holes, their myths and their reality. Learn how black holes form after stars undergo supernovae and create singularities. Discover how big black holes grow, how scientists find black holes and where black holes are located in the universe.

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

2. 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.

Formation of the Earth: Theories

3. Formation of the Earth: Theories

In this lesson, the theory of how the planet Earth formed will be discussed. This includes looking at how it differentiated into three layers, how it formed its atmosphere, water, and land features, and how it continues to evolve today.

Formation of the Moon: Theories

4. 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.

Planetary Predictors of Extraterrestrial Life

5. Planetary Predictors of Extraterrestrial Life

Investigate what is needed for life to exist anywhere and the implications for life in our solar system beyond Earth. Consider Mars and some of the moons of Jupiter and Saturn, including Europa, Callisto, Ganymede and Enceladus.

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

6. 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.

Dwarf Planets of the Solar System: Pluto, Eris, Haumea & Ceres

7. Dwarf Planets of the Solar System: Pluto, Eris, Haumea & Ceres

Discover why Pluto had to leave the league of planets and was downgraded to a dwarf planet. Learn the definitions for planet and dwarf planet. Find out about the currently classified dwarf planets in our solar system: Pluto, Eris, Ceres, Haumea and Makemake.

Asteroids, Meteorites & Comets: Definitions and Characteristics

8. Asteroids, Meteorites & Comets: Definitions and Characteristics

This lesson will cover the definitions and characteristics of asteroids, comets and meteorites. It will also explore what impact they have had on Earth and the impact they might have in the future.

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.
Not Taken

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Other Chapters

Other chapters within the Praxis Biology and General Science: Practice and Study Guide course

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