The planet with an atmospheric pressure similar to that 30 km above Earth's surface is Venus. At an altitude of about 50 km above Venus, the atmospheric pressure is comparable to Earth's surface pressure.
The air is thinner the higher you go.
Atmospheric pressure is caused by the force of the air above the earths surface. It is measured by the point in which the air meets the atmosphere.
Height above earths surface is called elevation
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they form above earths surface (THIS ANSWER IS NOT CORRECT) They Form BELOW earths surface(:
The epicenter
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