i donot understand what is atmosphere

http://www.kidsgeo.com/geography-for-kids/0040-introduction-to-our-atmosphere.php

There are several meanings for atmosphere. Here are several of them. Pick the one that fits your case.

http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=5AB&defl=en&q=define:atmosphere&sa=X&oi=glossary_definition&ct=title

atmophere is the air surronding the earth. k

The atmosphere refers to the layer of gases that surrounds the Earth. It is composed of several different gases, primarily nitrogen (about 78%), oxygen (about 21%), and small amounts of other gases like carbon dioxide, water vapor, and noble gases.

To understand the atmosphere, we can break it down into different layers based on their characteristics and properties. The lowest layer, closest to the Earth's surface, is called the troposphere. It extends up to about 15 kilometers (9 miles) in altitude and contains almost all of the Earth's weather systems. This is the layer where we live and where the air we breathe is found.

Above the troposphere, there are several other layers, including the stratosphere, mesosphere, and thermosphere. Each layer has different properties and plays a role in the Earth's climate and overall atmospheric dynamics.

To measure and study the atmosphere, scientists use various instruments and techniques. They collect data from weather stations, satellites, and weather balloons equipped with instruments like thermometers, barometers, anemometers, and hygrometers. This data is used to monitor and predict weather conditions, study climate patterns, and understand atmospheric phenomena like the greenhouse effect and ozone depletion.

In summary, the atmosphere is the layer of gases that surrounds the Earth, consisting mostly of nitrogen and oxygen. It is divided into different layers and plays a crucial role in supporting life on our planet. Scientists study it through various means to better understand our climate and weather patterns.