Atmosphere

Front 1

atmosphere

Back 1

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

Front 2

troposphere

Back 2

layer of the Earth’s atmosphere that is closest to the ground; is where clouds and weather occur.

Front 3

stratosphere

Back 3

layer of the Earth’s atmosphere above the troposphere; the ozone layer is contained here.

Front 4

mesosphere

Back 4

middle layer of the Earth’s atmosphere; the coldest layer and the layer where meteors are found.

Front 5

thermosphere

Back 5

layer of the Earth’s atmosphere above the mesosphere; very hot temperatures in this layer.

Front 6

exosphere

Back 6

outer layer of the thermosphere; extending outward into space; satellites orbit here.

Front 7

ozone

Back 7

a form of oxygen found in the stratosphere, molecule made of three atoms of oxygen.

Front 8

air pressure

Back 8

the force exerted by the gases pushing on an object; greatest near the surface of the Earth.

Front 9

ozone hole

Back 9

a seasonal reduction in ozone over Antarctica caused by CFC’s in the atmosphere.

Front 10

chlorofluorocarbons (CFC’s)

Back 10

chemical compounds used in some refrigerators, air conditioners, and aerosol sprays,and in the production of some foam packaging that can enter the atmosphere and destroy ozone.