1. Earth Sun All planets have an atmosphere, a layer of gases that surrounds them. Earth Atmosphere Sun Radiation

2. Sun's atmosphere is made up of hydrogen Back

3. Earth's atmosphere is made up primarily of nitrogen and oxygen. Carbon dioxide, ozone, and other gases are also present. It keep our planet warm and protect us from the direct effects of the Sun's radiation. Back

4. Earth’s Surface 30-50 miles Mesosphere 0- 10 miles Troposphere 10-30 miles Stratosphere 50-180 miles Ionosphere 180-500 Exosphere Different layers of Atmosphere Back Contains a variety of gases: water vapor, carbon dioxide, methane, nitrous oxide, and others. These gases help retain heat, a portion of which is then radiated back to warm the surface of Earth. Includes the ozone layer, Ozone molecules, which are Concentrated in this layer, absorb ultraviolet radiation from the Sun and protect us from its harmful effects. This layer is the coldest part of the atmosphere Also called the thermosphere, temperatures can reach up to several thousand degrees Fahrenheit. This is the outermost layer of the atmosphere, the transition zone into space. Distance from Earth’s Surface (miles)