About This Chapter
Earth & Space Science - Chapter Summary
Expert instructors have developed earth and space science lessons you can use to build your knowledge of Earth's surface, rocks, soil, waterways, weather and much more. Each lesson covers a different topic, enabling you to focus on one concept at a time and absorb information at your own pace. Learn about regional climates, the Solar System, tidal friction and much more. Upon completion of this chapter, you will be able to:
- Describe the internal and external forces that shape Earth's surface
- Explain how plate tectonics impact Earth's surface
- Provide details about the rock cycle and the formation and composition of soil
- Share basics of Earth's internal layers and the structure of Earth and the atmosphere
- Identify the natural factors that impact a region's climate
- Discuss air pressure, temperature and other weather variables
- Define and describe the process of the hydrologic cycle
- List types of waves and ocean currants
- Detail basics of the Solar System, tidal friction and the geography of the four seasons
Each lesson in this chapter is available as entertaining video or full transcript. Videos average about 8 minutes each and feature fun visual effects. Full transcripts offer embedded vocabulary words you can use to enhance your Earth and space science knowledge. Below the videos are clickable timelines that allow you to identify and skip to key topics without watch lessons in full. Use these features to boost your science knowledge, then test that knowledge by taking short lesson quizzes and a chapter exam.
1. The Dynamic Earth: Internal & External Forces that Shape Earth's Surface
There are many geologic processes that shape the surface of the Earth. Not only do they build and destroy a variety of landscapes, but they also give us clues to the interior of the Earth and the forces that exist there.
2. Plate Tectonics: A Unified Theory for Change of the Earth's Surface
After many years of trying to solve the mystery of the moving continents, enough data and evidence was collected to develop a unifying theory of how the surface of the earth changes. It's called plate tectonics.
3. Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks
In this lesson, we will discuss the three main types of rocks and how they are formed. The lesson also gives an introduction into how matter locked in rocks can be cycled through the earth.
4. The Formation and Composition of Soil: Definition and Factors
In this video lesson you will learn how soil is formed and what it is made of. You will also learn about how soil is classified and distributed in layers underground.
5. The Internal Layers & Structure of the Earth
While the Earth feels pretty solid, it's actually mostly liquid. Of course, the only reason we know all this is because of atomic weapons! As this lesson shows, studying the makeup of the Earth has been explosive at times.
6. The Structure of the Atmosphere
If you've ever climbed a mountain or been to the beach, you know that the atmosphere is different at different levels. This lesson explains how the structure of the atmosphere is really like a layer cake.
7. Natural Factors That Determine a Region's Climate
Climate is influenced by factors like atmosphere, ocean currents, landforms and plate tectonics. This lesson explains how these effects affect our weather patterns, which determine climate.
8. Weather Variables: Air Pressure, Temperature & Density
Weather is influenced by a number of factors. In this lesson, you will learn about three key variables that control weather and how they work together to do so.
9. The Hydrologic Cycle: Definition, Process & Diagram
The hydrologic, or water, cycle describes the storage and movement of all water on Earth. This lesson will cover the different reservoirs where water can be stored and how it moves between them.
10. Waves: Types, Features & Effect on Erosion
There are different types of ocean waves, including wind waves, tsunamis and tidal waves. Learn the features of waves and how their erosive effect creates the unique features found on the shoreline.
11. What are Ocean Currents? - Definition & Types
Currents are responsible for circulating water throughout the earth's oceans. This lesson will discuss surface ocean currents, deep water ocean currents, and the forces that drive them.
12. Solar System Overview
This lesson will go over the major aspects of our solar system, including the sun, planets, moons, asteroids, comets, meteors, meteorites, and meteoroids.
13. Tidal Friction: Effects on Earth & the Moon
This lesson will go over the concept of tidal friction, why it occurs, and how all of that has affected Earth's spin and day length, as well as the moon's rotation and distance from Earth.
14. Geography of the Four Seasons
This lesson will explain how the earth's axis and rotation affect seasons. In doing this, it will also highlight the concept of the summer and winter solstices, as well as how seasons vary around the globe.
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