About This Chapter
Space, The Solar System and the Universe - Chapter Summary
In this chapter, you will examine theories of how the universe began, study the formation and life cycles of starts, and review the inner and outer planets in Earth's solar system. As you complete each lesson, check your retention of the material by taking the short lesson quiz immediately following. A chapter test will help you measure your overall progress, while the Dashboard helps you stay organized and on track. You will study the following topics:
- Explanation and overview of the Big Bang and related theories
- Sequence of star formation, giant and dwarf stars
- Types and formation of galaxies
- Color, size and life cycle of stars
- Structure and life cycle of the sun
- Earth's solar system: Inner and outer planets
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.
2. Star Formation: Main Sequence, Dwarf & Giant Stars
Learn how stars are born, beginning with a protostar. Then learn about stars in later stages of life, including main sequence stars, brown dwarfs, red giants, and black holes.
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. 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.
5. 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.
6. 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.
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.
8. 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.
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Other chapters within the Science 101: Intro to Natural Sciences course
- Atomic Structure
- Fundamentals of Matter
- Introduction to Thermodynamics
- Mechanics of Physics
- Introduction to Relativity
- Fundamentals of Electricity
- Introduction to Magnetism
- Fundamentals of Waves, Sound and Light
- Introduction to Atmospheric Science
- Geology Basics
- Introduction to Molecular Biology
- Cell Biology Fundamentals
- Introduction to Biochemistry
- Molecular Genetics Overview
- Cell Processes
- Plant Biology Foundations
- Human Anatomy Overview
- Animal Reproduction, Growth and Development
- Fundamentals of Genetics
- Introduction to Ecology
- The Origin and History of Life On Earth
- Phylogeny and the Classification of Organisms
- Basics of Evolution
- Studying for Science 101