made of gases
begins 50 km above the surface and ends at 80 km in the atmosphere.
Meso means "middle:
the mesosphere is about 90 degrees Celsius
starts at 50 km and contains the ozone layer.
Stratomeans "layer" or "spread out."
the stratosphere is about 60 degrees celcius
the depth of the troposphere varies from 16 km above the surface to about 9 km above the north and south poles.
Tropo means "turning" or "changing."
the troposphere is about 60 degrees celcius
the thermosphere is 80 km above the earths surface.
thermosphere means "heat.
the thermosphere is about 1,800 degrees celcius