Atmosphere notes

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Layers of the atmosphere:

Layers of the atmosphere Complete the following for each layer of the atmosphere: What happens to air temperature in this layer of the atmosphere (increase or decrease)? What happens to air pressure in this layer of the atmosphere (increase or decrease)? How “thick” is this layer (compare to previous)? What happens in this layer? What is found in this layer?

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Atmosphere Notes SC Standard 6-4.1 Crossroads Middle School Earth’s atmosphere is the layer of gases that surrounds the planet and makes conditions on Earth suitable for living things.

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Earth’s atmosphere is the layer of gases that surrounds the planet and makes conditions on Earth suitable for living things.

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UV UV UV Earth’s Surface the troposphere , where all weather occurs the stratosphere , where the ozone layer is contained the mesosphere the thermosphere the exosphere Earth’s atmosphere is divided into several different atmospheric layers extending from Earth’s surface outward. ))))))))))))))))))))))))))))))))))))))))))))))) )))))))))))))))))))))))))))))))))))))))))))))))

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Earth’s Surface troposphere stratosphere mesosphere thermosphere exosphere Atmospheric Gases water vapor and carbon dioxide important for weather found in the troposphere ozone - a form of oxygen that absorbs harmful UV rays Nitrogen and Oxygen Nitrogen and Oxygen are the two most common gases and are found throughout all layers of the atmosphere. There are lots of other gases, like argon, in very small amounts, but do not play an important role. troposphere

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Temperature (°C) troposphere stratosphere mesosphere thermosphere exosphere Atmospheric Temperatures As altitude increases, temperature decreases in the troposphere The stratosphere is cold , except the upper region where the ozone is. The mesosphere is the coldest layer. Even though the air is thin in the thermosphere, it is very hot . The cold regions of outer space extend from the exosphere . 0° – differences in temperature separate the layers.

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Earth’s Surface troposphere stratosphere mesosphere thermosphere exosphere Atmospheric Pressure Pressure Increases High Pressure Low Pressure Air pressure is force exerted by gases pushing on an object. Air pressure is greatest near the surface of the Earth

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Earth’s Surface troposphere stratosphere mesosphere thermosphere exosphere Atmospheric Pressure High Pressure Air pressure is force exerted by gases pushing on an object. Air pressure is greatest near the surface of the Earth Pressure Decreases Air pressure decreases through the layers farther out from the surface as Earth’s pull of gravity decreases . Low Pressure

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