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15 Cards in this Set

  • Front
  • Back
What is a wind vane?
A device used to find wind direction. Most wind vanes are shaped like a long arrow with a tail.
What are low-pressure areas?
Areas where pressure is lower than the surrounding air.
What are high-pressure areas?
Areas where pressure is higher than the surrounding air.
What is a barometer?
A device used to measure air pressure. Two kinds are a mercury and aneroid.
What is air pressure
The push of air against its surroundings.
What is wind?
The movement of air.
What is the greenhouse effect?
The process in which heat from Earth is trapped by the atmosphere.
What is weather?
It is the condition of the atmosphere at a certain place and time. It can change from day to day, from hour to hour and even minute to minute.
What is the troposphere?
The lowest layer of the atmosphere which supports life. It reaches about 11km above the Earth's surface.
What is the atmosphere?
A blanket of air, which is made up of gases, liquids, and some solid matter.
What is air made up of?
What is air?
It is matter and a mixture of gases.
What is nitrogen?
It is largely what air is composed of.
What is oxygen?
The second most plentiful gas in air.
What other gases is air composed of?
Carbon dioxide and water vapor