'Ozone absorbs uv radiation' diaporamas de présentation

Chapter 17

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Chapters 2 & 3

Chapters 2 & 3. The Scientific Method The Atmosphere The Hydrosphere and Biosphere. Section 2-1 Objectives:. List and describe the steps of the experimental method Describe why a good hypothesis is not simply a guess Describe the two essential parts of a good experiment.

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Chapter 3

Chapter 3. Section 2. The Atmosphere. Earth is surrounded by a mixture of gases called the atmosphere. Nitrogen (78%), oxygen (21%), carbon dioxide, and other gases are all parts of this mixture.

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The Ozone (O 3 ) Shield

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