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Science Ch. 8

Lesson 1

QuestionAnswer
How many layers of the earth's atmosphere are there? five
What is the bottom layer of the atmosphere? Troposphere
What happens to air temperature and pressure as altitude increases? They decrease.
How many convection currents are there around the earth? Six
What happens when cold air is next to warm air? The cold air sinks, forcing the warm air to rise.
What is the second lowest layer of the atmosphere? Stratosphere
What is the middle layer of the atmosphere? Mesosphere
What is the second highest layer of the atmosphere? Thermosphere
What is the highest layer of the atmosphere? Exosphere
What is it called when gases and liquids rise and sink in a circular path? Convection current
What is a band of fast wind formed by the different temperatures between convection currents? Jet Stream
Created by: schine
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