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Ch 19: The Origin of the Universe and Life on Earth: Homework Help

About This Chapter

The Origin of the Universe and Life on Earth chapter of this High School Biology Homework Help course helps students complete their origin of the universe and life on Earth homework and earn better grades. This homework help resource uses simple and fun videos that are about five minutes long.

How it works:

  • Identify which concepts are covered on your origin of the universe and life on Earth homework.
  • Find videos on those topics within this chapter.
  • Watch fun videos, pausing and reviewing as needed.
  • Complete sample questions and get instant feedback.
  • Finish your origin of the universe and life on Earth homework with ease!

Topics from your homework you'll be able to complete:

  • Theories and explanations of the origin of life on Earth
  • Evidence for the Big Bang Theory
  • Formation of Earth and moon theories
  • Structure of the sun and stages of the sun's life cycle
  • Evolutionary change
  • The history of life on Earth

12 Lessons in Chapter 19: The Origin of the Universe and Life on Earth: Homework Help
Origins of the Universe: The Big Bang and Expanding & Contracting Universes

1. 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.

The Origin of Life on Earth: Theories and Explanations

2. The Origin of Life on Earth: Theories and Explanations

Ever wonder how living things came from non-living things? We will explore what conditions on early Earth may have created life from non-living items.

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

3. 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.

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.

Formation of the Earth: Theories

5. 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

6. 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.

Structure of the Sun

7. 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.

Stages of the Sun's Life Cycle

8. Stages of the Sun's Life Cycle

Discover our Sun, the provider of energy for life on Earth. Learn how the Sun was born, how it lives as a main sequence star, how it will age into a red giant and how it will die as a white dwarf.

The Endosymbiosis Theory: Evolution of Cells

9. The Endosymbiosis Theory: Evolution of Cells

Ever wonder why some cells are very simple and others are complex with countless organelles to remember? We will look at how simple cells evolved to become more complex cells - as well as evidence to support this.

Evolutionary Change: Definition and Forms

10. Evolutionary Change: Definition and Forms

You've probably heard of Charles Darwin and evolution. We know that evolution is change over time, but here we will look at how these changes may have occurred during Earth's history.

The History of Life on Earth: Timeline and Characteristics of Major Eras

11. The History of Life on Earth: Timeline and Characteristics of Major Eras

The Earth is over 4.6 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.

Catastrophism: Definition, Theory & Cuvier

12. Catastrophism: Definition, Theory & Cuvier

This lesson introduces the concept of catastrophism, it's roots, and the role of George Cuvier. It includes an explanation of mass extinction events and real-world examples. A brief quiz is also included.

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