About This Chapter
How it works:
- Identify which concepts are covered on your Earth history homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample problems and get instant feedback.
- Finish your Earth history homework with ease!
Topics from your homework you'll be able to complete:
- The Big Bang Theory
- Galaxy formation
- Theories of the formation of the Earth
- Theories of the formation of the moon
- Structure of the sun
- The life cycle of the sun
- Major eras in the history of Earth
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. 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.
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. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. Transform Boundary: Definition, Facts & Examples
In this lesson, you will learn the meaning of the term 'transform boundary' in the context of plate tectonics. A number of features and examples of transform boundaries will be introduced. A short quiz will follow.
10. Proterozoic Eon: Timeline & Facts
The Proterozoic eon was the last of the three eons during the Precambrian supereon. This lesson will cover the unique events that shaped this time period and will also allow you to take a quiz.
11. The Mesozoic Era: Facts, Events & Timeline
The Mesozoic Era began 252 million years ago with the largest mass extinction in Earth's history and ended 66 million years ago with the asteroid that killed off the dinosaurs. This lesson will cover the important events that occurred during the Mesozoic Era.
12. The Paleozoic Era: Definition, Timeline & Events
The Paleozoic Era spans almost 200 million years from 542 to 251 million years ago. It is defined by great explosion of life at the beginning of the era and ends with the largest mass extinction in the history of our planet. This lesson will cover the important features of Paleozoic Era.
13. Which Dinosaurs Were Herbivores?
A lot of people tend to think that all dinosaurs were meat eaters, like T. rex or modern day alligators. But this wasn't true! There were many herbivorous dinosaurs and this lesson goes over a few of them.
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Other chapters within the Earth Science: Homework Help Resource course
- Earth Science Basics: Homework Help
- Geologic Time and Earth Science: Homework Help
- Properties of Matter: Homework Help
- Earth's Spheres and Internal Structure: Homework Help
- Plate Tectonics: Homework Help
- Minerals and Rocks: Homework Help
- Igneous Rocks: Homework Help
- Volcanoes: Homework Help
- Weathering and Erosion: Homework Help
- Sedimentary Rocks - A Deeper Look: Homework Help
- Metamorphic Rocks - A Deeper Look: Homework Help
- Rock Deformation and Mountain Building: Homework Help
- Water Balance: Homework Help
- Running Water: Homework Help
- Ground Water: Homework Help
- Glaciers: Homework Help
- Oceans: Homework Help
- Coastal Hazards: Homework Help
- The Atmosphere: Homework Help
- Weather and Storms: Homework Help
- Earthquakes: Homework Help
- Energy Resources: Homework Help