<meta http-equiv="refresh" content="1; url=/nojavascript/"> Earth's Outer Layers | CK-12 Foundation
Dismiss
Skip Navigation
You are reading an older version of this FlexBook® textbook: CK-12 Earth Science Concepts For Middle School Go to the latest version.

2.12: Earth's Outer Layers

Created by: CK-12

Does this look familiar?

Gases, water, rock, and living organisms are all found at Earth's surface. These materials are also found above or below the surface. They interact with each other and in doing so alter each other. For example, the hydrosphere may cause some of the lithosphere to wash away.

Spheres

Earth is made of layers. Since Earth is round, the layers all have the ending sphere (Figure below).

Some of the different parts of the Earth are the:

  • Atmosphere: The thin layer of air, mostly nitrogen and oxygen, that surrounds the Earth.
  • Hydrosphere: All the water on Earth.
  • Biosphere: All the living organisms on Earth.
  • Lithosphere: The solid rock part of Earth, including mountains, valleys, continents, and all of the rock beneath the oceans.

Earth has four layers: atmosphere, hydrosphere, biosphere, and lithosphere.

All of Earth’s layers interact. Therefore, Earth’s surface is constantly undergoing changes.

Vocabulary

  • atmosphere: Mixture of gases that surrounds a planet such as Earth.
  • biosphere: All living organisms on Earth.
  • hydrosphere: All the water on Earth.
  • lithosphere: Solid, brittle rock; Earth's outermost rocky layer

Summary

  • Earth is made of layers. The names end in sphere because Earth is round.
  • Some of the layers are: atmosphere, biosphere, hydrosphere, and lithosphere.
  • The lithosphere is the brittle crust and uppermost mantle.

Practice

Use the resource below to answer the questions that follow.

  1. What are the four major systems of Earth?
  2. What is the geosphere?
  3. What is the atmosphere?
  4. What is the hydrosphere?
  5. What is the biosphere?
  6. Where does Earth's energy come from?
  7. How does Earth gain mass?
  8. How does Earth lose mass?
  9. What are ecosystems?
  10. What is the function of ecosystems?

Review

  1. What is the atmosphere?
  2. What is the lithosphere?
  3. Where is the hydrosphere?

Image Attributions

Description

Difficulty Level:

Basic

Grades:

6 , 7 , 8

Date Created:

Jan 04, 2013

Last Modified:

Jan 07, 2014

We need you!

At the moment, we do not have exercises for Earth's Outer Layers.

Files can only be attached to the latest version of Modality

Reviews

Please wait...
You need to be signed in to perform this action. Please sign-in and try again.
Please wait...
Image Detail
Sizes: Medium | Original
 
SCI.ESC.314.5.L.1

Original text