Chapter 8 Study Guide Flashcards
What forms when air temperatures are different?
Convection currents.
What decreases as you move up the atmospheric layers?
Air pressure.
Which way do the winds generally blow over the United States?
From west to east.
What does an anemometer measure?
Wind speed.
What does a hygrometer measure?
Moisture in the air.
What does a barometer measure?
Air pressure.
What does a rain gauge measure?
How much rain has fallen.
Where do hurricanes get their energy from?
Ocean water.
What do hurricanes get from ocean water?
Energy.
What is a column of wind being controlled by opposite wind directions?
A tornado.
What is the difference between a storm watch and a storm warning?
A storm watch means that storms might form. A storm warning means that storms have formed and you should prepare for them.
What does raising warm air cause?
It causes long periods of precipitation at a front.
Describe how convection currents form:
Land gets warm more quickly in sunlight than water does. At night, land cools faster than water does. This causes the air above the land and the water to have different temperatures. Different temperatures cause convection currents to form.
