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8th Grade Ch 8
Chapter 8 Test
| Question | Answer |
|---|---|
| 1. Which type of air mass brings cool, wet weather? (cP, cT, mP, mT) | maritime polar |
| 2. Precipitation made of ice crystals that fall to the ground is called ______. | snow |
| 3. Which type of front forms a Y shape? | occluded |
| 4. Which type of front forms when a warm air mass moves into a region occupied by a cold air mass? A _____ front. | warm |
| 5. Which type of cloud forms a flat, gray layer of heavy clouds not far above the ground? | stratus or altostratus |
| 6. What type of drought is based on a water shortage’s effect on people? | socioeconomic drought |
| 7. What type of drought occurs when precipitation cannot supply enough moisture to the ground to support an area’s crops? | agricultural drought |
| 8. Cooling air becomes saturated at a temperature called the _________ point. | dew |
| 9. What are the mid-level clouds? | altocumulus, altostratus, nimbostratus |
| 10. What are the high-level clouds? | cirrus, cirrocumulus, cirrostratus |
| 11. Which type of air mass brings warm, moist weather? (cP, cT, mP, mT) | maritime tropical |
| 12. ______________ is the process of a liquid becoming a gas. | evaporation |
| 13. When the temperature of air rises, relative humidity will _____________________. | increase |
| 14. A low that forms along a front is called a ____________. | frontal cyclone |
| 15. What air mass brings very cold and dry weather? | arctic or continental polar |
| 16. An almond-shaped cloud is a _______. | lenticular |
| 17. The movement of water from the earth’s surface into the air and then back to the surface is the _____ cycle. | water |
| 18. The year-round atmospheric conditions typical of a certain place are its _________________. | climate |
| 19. Which type of front forms when two air masses push against each other but neither advances? | stationary |
| 20. What is a mixture of smoke and fog called? | smog |
| 21. What is the amount of water vapor in the air called? | humidity |
| 22. What phenomenon occurs when an area receives an abnormally low amount of precipitation over a long period? | drought |
| 23. What is rain that freezes before it hits the ground? | sleet |
| 24. What is the study of weather and of the atmospheric conditions that produce weather? | meteorology |
| 25. What phenomenon occurs when an air mass remains stationary over a region for a long time? | air-mass weather |
| 26. List the 3 factors that affect the density of an air mass. | temperature, humidity, pressure |
| 27. The most frequent type of cloud is the _____. | cirrus |
| 28. Air that is completely full of water vapor and can hold no more is considered ________. | saturated |
| 29. Snowflakes with white, feathery branches forming a leaf or star shaped pattern are ___________. | dendrites |
| 30. Drops of liquid water that have a diameter of 0.5 millimeter or greater and fall from the clouds to Earth are called ____________________. | raindrops |
| 31. What type of fog is found along the slopes of mountains? | upslope |
| 32. White, billowy clouds that resemble piles of cotton puffs are ____________. | cumulous |
| 33. Layered balls of ice are called _________. | hailstones |
| 34. Ice crystals in clouds that grow large enough to fall to the ground are ___________. | snowflakes |
| 35. Water vapor in the air that touches the cooler ground and turns to a liquid is _________. | dew |
| 36. Water vapor in the air that touches the ground and turns to ice is _______. | freezing rain |
| 37. A substance going from a solid to a liquid is ________. | melting |
| 39. The ratio comparing the actual humidity to the humidity of saturated air under the same conditions is ______. | relative humidity |
| 40. A large body of air with relatively uniform properties is a(n) _________. | air mass |
| 41. Airborne water vapor cannot turn into liquid without a small particle called a(n) ________. | condensation nuclei |
| 42. The 3 major factors that determine the earth’s weather are: | heat energy, uneven distribution of heat energy, water vapor |
| 43. A thick, brownish haze that is released into the air by vehicles and some factories and plants is ______. | photochemical smog |
| 44. List and explain the two processes that form rain. | Bergeron process - Rain remains liquid as long as the air temperatures remain above freezing. Collision-coalescence process - Larger than normal condensation nuclei cause the formation of giant droplets. They stick to more droplets and become bigger. |
| 38. Which is true? a.Most clouds result from adiabatic cooling of moist air. b.A cloud forms when a body of rising air reaches the dew point. c.Clouds consist of tiny ice crystals or droplets of liquid water. d.All of the above. | D. all of the above are true |
Created by:
misschapman
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