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12 Cards in this Set

  • Front
  • Back
What do we call the air around us and above us?
atmosphere
The atmosphere is made of a mixture of what?
gases
Seventy-eight percent of the atmosphere is what?
nitrogen
Twenty-one percent of the atmosphere is what?
oxygen
What is the push of air against objects in all directions?
air pressure
In what part of the atmosphere do satellites orbit?
exosphere
In what part of the atmosphere do the auroras (shimmering curtains of light) appear?
thermosphere
In what part of the atmosphere do meteors (shooting stars) burn up? This is the coldest layer.
mesosphere
In what part of the atmosphere do jets cruise? (Near the bottom of the layer)
stratosphere
In what part of the atmosphere does all weather happen?
troposphere
As air heats, it does what?
It rises.
As air cools, it does what?
It falls.