The Earth's Atmosphere



Click on image for full size version (104K GIF)
Image courtesy of LPI/NASA
The atmosphere surrounds Earth and protects us by blocking out dangerous rays from the sun. The atmosphere is a mixture of gases that becomes thinner until it gradually reaches space. The air in the atmosphere is essential to life because it allows us to breathe.

Recently, there have been many studies on the atmosphere connected to the greenhouse effect . The ozone layer has also been in the news a lot.

The atmosphere is divided into five layers depending on how temperature changes with height. Most of the weather and clouds are found in the first layer.

The Polar Atmosphere

MILAGRO Campaign - a study of air pollution around Mexico City

Earth as a System

Weather Crossword Puzzle your browser must be Java-enabled to run this game

Atmosphere and Clouds Wordsearch

Image showing the temperature of the atmosphere throughout different layers

Image showing what man-made and natural phenomena occur in each layer of the atmosphere

Image showing the layers of the atmosphere with emphasis on the ionized layers

Introduction to the Atmosphere content and activities from Project LEARN

Global Climate Change content and activities from Project LEARN

NSF News: Can Dying Trees Change Weather and Climate?

The Earth's Atmosphere



Click on image for full size version (104K GIF)
Image courtesy of LPI/NASA

The atmosphere surrounds Earth and protects us by blocking out dangerous rays from the sun. The atmosphere is a mixture of gases that becomes thinner until it gradually reaches space. It is composed of Nitrogen (78%), Oxygen (21%), and other gases (1%).

Oxygen is essential to life because it allows us to breathe. Some of the oxygen has changed over time to ozone. The the ozone layer filters out the sun's harmful rays. Recently, there have been many studies on how humans have caused a hole in the ozone layer.

Humans are also affecting Earth's atmosphere through the greenhouse effect. Due to increases in gases, like carbon dioxide, that trap heat being radiated from the Earth, scientists believe that the atmosphere is having trouble staying in balance creating the greenhouse effect .

The atmosphere is divided into five layers depending on how temperature changes with height. Most of the weather and clouds are found in the first layer.


The Polar Atmosphere

MILAGRO Campaign - a study of air pollution around Mexico City

Earth as a System

Weather Crossword Puzzle your browser must be Java-enabled to run this game

Atmosphere and Clouds Wordsearch

Image showing the temperature of the atmosphere throughout different layers

Image showing what man-made and natural phenomena occur in each layer of the atmosphere

Image showing the layers of the atmosphere with emphasis on the ionized layers

Introduction to the Atmosphere content and activities from Project LEARN

Global Climate Change content and activities from Project LEARN

NSF News: Can Dying Trees Change Weather and Climate?

The Earth's Atmosphere



Click on image for full size version (104K GIF)
Image courtesy of LPI/NASA

The atmosphere surrounds Earth and protects us by blocking out dangerous rays from the sun. The atmosphere is a mixture of gases that becomes thinner until it gradually reaches space. It is composed of Nitrogen (78%), Oxygen (21%), and other gases (1%).

Oxygen is essential to life because it allows us to breathe. In addition, some of the oxygen has changed over time forming ozone. The the ozone layer filters out the sun's harmful ultraviolet radiation. Recently, there have been many studies on how humans caused a hole to develop in the ozone layer.

Humans are also affecting Earth's atmosphere through the greenhouse effect. Due to increases in gases, such as carbon dioxide, that trap heat being radiated from the Earth, scientists believe that the atmosphere may have problems balancing the incoming solar radiation and the reradiated heat from Earth's surface creating the greenhouse effect .

The atmosphere is divided into five layers depending on how temperature changes with height. Most of the weather and clouds are found in the first layer.


The Polar Atmosphere

MILAGRO Campaign - a study of air pollution around Mexico City

Earth as a System

Weather Crossword Puzzle your browser must be Java-enabled to run this game

Atmosphere and Clouds Wordsearch

Image showing the temperature of the atmosphere throughout different layers

Image showing what man-made and natural phenomena occur in each layer of the atmosphere

Image showing the layers of the atmosphere with emphasis on the ionized layers

Introduction to the Atmosphere content and activities from Project LEARN

Global Climate Change content and activities from Project LEARN

NSF News: Can Dying Trees Change Weather and Climate?

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Last modified December 2, 2008 by Lisa Gardiner.
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