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Test Review / Study Guide – Chapter 2 – Weather Patterns
1. The force of air molecules pressing on an area
2. The condition of Earth’s atmosphere at a certain time and place
3. Wind patterns that flow thousands of km over Earth
4. When water changes from a liquid to a gas
5. When water changes from a gas to a liquid
6. Any form of liquid or solid water that falls from the sky
7. The amount of water vapor in the air
8. The temperature at which the air is saturated with water vapor
9. The influence of Earth’s rotation on winds
10. Air that moves horizontal to the ground.
Short Answer:
11. Wind moves from areas of ____________ pressure to areas of _________________ pressure.
12. What tool is used to measure air pressure? __________________________
13. Clouds form when ___________ air rises, ____________, and condenses on ________________.
14. Relative humidity compares the amount of water vapor in the air to the _________________ amount of
water vapor in the air.
15. Air that sinks is _________________ than the surrounding air.
16. ____________________________ clouds are most likely to bring thunderstorms.
17. The two calm regions that separate wind belts are called the ______________________ and the
18. We live in the _________________________ layer of the atmosphere.
True/False. Circle whether you each statement is true or false. If it is false, underline the part that is
19. Wind is caused by uneven heating of Earth’s surface causing pressure differences. _____________
20. Cold air has a lower pressure than warm air. _____________
21. As density of the air decreases, air pressure decreases. _____________
22. As altitude increases, air pressure decreases. _____________
23. Large pressure differences between areas cause strong, fast winds. _____________
24. Cirrus clouds form in warm areas close to Earth’s surface. _____________
25. Freezing rain is rain that freezes when it hits the ground, while sleet freezes as it falls. _________
Vocabulary (Clouds and Precipitation):
_______________________________ 26. Forms when ice pellets move up and down in clouds, gaining layers of ice.
_______________________________ 27. The most common form of precipitation
_______________________________ 28. Type of cloud that forms in layers; smooth.
_______________________________ 29. Type of precipitation that forms from ice crystals merging in clouds
_______________________________ 30. A cloud that rests on the ground or water
_______________________________ 31. Rain that freezes when it hits the ground or other surfaces
_______________________________ 32. Type of cloud that are puffy with darker bases.
_______________________________ 33. Type of cloud that forms in very cold air at high altitudes.
Wind Patterns: On the diagram to the right, label:
1. Trade winds
2. Westerlies
3. Polar Easterlies
4. Horse Latitudes
5. Doldrums
6. Circulation Cell
Part 6: Short Answer.
34. Describe the steps of the water cycle.