Ch 42: ILTS Biology: The Solar System & the Universe

About This Chapter

Refresh your knowledge of theories on the creation of the universe and facts about the structure of the solar system as you study for the ILTS Biology exam. Our video lessons can help you prepare for exam questions on the universe and solar system.

ILTS Biology: The Solar System & the Universe - Chapter Summary

Use the lessons in this chapter to review information about the origins and structure of the universe and our solar system. You'll be prepared to answer ILTS Biology exam questions on topics such as:

  • The Big Bang Theory and evidence for it
  • Types of stars and how they form
  • Types of galaxies
  • The structure and life cycle of the sun
  • Black holes
  • Inner, outer and dwarf planets of the solar system
  • Theories on how the Earth and the moon were formed
  • Characteristics of asteroids, meteorites and comets
  • How technologies are used to study the universe

These lessons are available for viewing as you schedule permits, on a computer, tablet or smartphone. Written transcripts of the lessons have key terms highlighted so you can tell what's important. There's even an ask-an-expert feature where you can pose questions to our instructors.

ILTS Biology: The Solar System & the Universe Chapter Objectives

In Illinois, passing the ILTS Biology exam is one of the requirements for obtaining a teaching certificate in that subject. The ILTS Biology exam consists of 125 multiple-choice questions, divided into six subareas. Questions on the solar system and the universe are in the subarea called Earth Systems and the Universe.

You can get experience answering multiple-choice questions like you'll see on the exam through our lesson quizzes. These brief tests also let you assess your knowledge of the subject. The quiz answer keys provide links to the lessons, making it easy to jump back to specific points to review information.

14 Lessons in Chapter 42: ILTS Biology: The Solar System & the Universe
Test your knowledge with a 30-question chapter practice test
The Big Bang Theory: Explanation and Evidence

1. The Big Bang Theory: Explanation and Evidence

A popular scientific theory is that our universe originated with what is known as the Big Bang. This lesson explains what the Big Bang is and the evidence that supports it. Following the lesson, you can test your newfound knowledge with a quiz!

Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion

2. Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion

Discover what evidence exists to support the Big Bang theory of the birth of the universe. Learn how cosmic background radiation, the red shift of light and the ongoing expansion of the universe led scientists to believe that the universe was started with the Big Bang.

Types of Stars by Size, Color and Life Cycle

3. 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.

Galaxy Formation: Spiral, Elliptical & Irregular Galaxies

4. 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 Sun: Structure & Life Cycle

5. The Sun: Structure & Life Cycle

Learn some secrets of our star, the sun, and discover what's inside of it. Learn about the history and future of the sun, then test your new knowledge with a quiz!

Life Cycle of Black Holes

6. 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

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.

Formation of the Earth: Theories

8. 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

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.

Planetary Predictors of Extraterrestrial Life

10. 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

11. 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

12. 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

13. 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.

Using Technology to Study the Earth & Universe

14. Using Technology to Study the Earth & Universe

Have you ever wondered how we know so much about the universe? Learn about how we use technology to study the universe, from the tiny to the enormous. Then take a quiz to test your knowledge.

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 ILTS Science - Biology (105): Practice and Study Guide course

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