Introduction

The atmosphere is an invisible part of the earth that is just as important to the existence of life on earth as the food and water resources that are found on its surface. Since we cannot see this part of the earth, we are not conscious of it and its importance to us and the rest of life on earth. However, if it were taken away, everyone would feel the consequences. We all depend on the air that is located within the atmosphere and the functions that it carries out. Visit NOVA: Discovering Air to read about how early thoughts about the importance of air changed over time.

In this lesson, you will learn about the characteristics and layers of earth's atmosphere and its importance to supporting life on earth.

 

Following successful completion of this lesson, students will be able to:

  • identify the physical and chemical properties of the earth's atmosphere.
  • identify and distinguish between the different levels of the earth's atmosphere.
  • explain the importance of the earth's atmosphere.

The above objectives correspond with the following Alabama Course of Study Environmental Science Objectives: 4B1.

 

 

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