1. Chatper 24 Review

2. Question # 1 What happens to air as the lower layers are warmed? The air rises

3. Question # 2 What’s an air mass? A large body of air throughout which temperature and moisture content are similar

4. Question # 3 Name the four types of air masses and give their symbols. Continental polar (cP) Continental tropical (cT) Maritime polar (mP) Maritime tropical (mT)

5. Question # 4 If a tornado were to touch down, what’s the path it would take? Not predictable

6. Question # 5 What’s an anticyclone? A weather event in which the air sinks and flows outward from a center of high pressure, and that brings dry weather.

7. Question # 6 Why would a scientist want to study upper atmospheric conditions? In order to track global weather patterns

8. Question # 7 What do the H’s and L’s represent? Air pressure centers

9. Question # 8 What’s a midlatitude cyclone? When a bend forms in a cold front, it begins the process of creating an area of low pressure with rotating wind that moves toward the rising air of the central low-pressure region

10. Question # 9 What happens with the information that weather centers collect? They exchange them with other centers

11. Question # 10 How is the information conveyed on a weather map? Colors and symbols

12. Question # 11 What are the characteristics of a warm front? Produce precipitation over a large area and are sometimes violent

13. Question # 12 What’s a radiosonde? An instrument package that is carried high into the atmosphere by a helium- filled balloon to measure relative humidity, air pressure, and air temperature

14. Question # 13 What’s a front that forms when a cold air mass overtakes a warm air mass and lifts the warm air mass off the ground and over another air mass? A cold front

15. Question # 14 Fill in the chart below Air MassOriginatesType of Air cP cT mP mT Polar regions in Canada Cold & Dry U.S. Southwest Warm & Dry Polar Pacific & Polar Atlantic Tropical Pacific & Tropical Atlantic Cold & Moist Warm & Moist

16. Question # 15 What’s a hurricane? A severe storm that develops over tropical oceans, whose strong winds spiral in toward the low-pressure storm center

17. Question # 16 A destructive, rotating, funnel-shaped column of air with high wind speeds is known as what? A tornado

18. Question # 17 What’s a brief, heavy storm with rain, wind, lightning, and thunder called? A thunderstorm

19. Question # 18 What’s a front that forms when a cold air mass overtakes a warm air mass and lifts the warm air mass off the ground and over another air mass? Occluded front

20. Question # 19 What’s a stationary front? A front of air masses that moves either very slowly or not at all.

21. Question # 20 What causes the different air pressures on Earth? The unequal heating of the Earth’s surface.