NAME _________________________________________________________________________ PERIOD _________________ UNIT 4 LESSONS 1 AND 2 STUDY GUIDE ELEMENTS OF WEATHER AND CLOUDS AND CLOUD FORMATION Matching: ___E__ 1. An instrument used to measure temperature A. electromagnetic waves ___D__ 2. A form of energy with wavelengths shorter than visible light (sunburn) ___F__ 3. Energy transferred from a hotter object to a cooler one B. infrared radiation C. radiation ___B__ 4. A form of energy with wavelengths longer than visible light and reaches earth as heat D. ultraviolet radiation E. thermometer ___G__ 5. The transfer of heat by direct contact F. heat ___C__ 6. The transfer of heat through empty space by electromagnetic waves G. conduction ___H__ 7. The transfer of heat through a fluid (warm rising, cool sinking) H. convection ___C__ 8. A form of energy that travels through space 9. Most of earth’s incoming ultraviolet radiation is absorbed by the ____ozone____ layer. 10. Most of earth’s heat from the sun comes in the form of _________infrared__________ radiation. Matching: ___D__ 11. The percentage of water vapor in the air compared to the Maximum amount of water the air can hold A. wind B. humidity ___E___ 12. Increased cooling caused by the wind C. anemometer ___A___ 13. Horizontal movement of air from an area of high pressure to an area of low pressure D. relative humidity ___C__ 14. Instrument used to measure wind speed E. wind-chill factor ___F__ 15. An instrument used to measure relative humidity F. psychrometer ___B__ 16. The measure of the amount of water vapor in the air 17. Winds are caused by differences in__________air pressure________________. 18. Clouds form when water vapor in the air _________C___________ A. Falls to the ground B. Is deposited as ice onto a solid surface C. reaches dew point and condenses onto a solid surface D. becomes liquid water or ice crystals Relative Humidity Use this Dry Bulb Reading (˚F) Difference Between Wet and Dry Bulb Readings (˚F) chart to answer the following questions. 10 1 88 2 76 3 65 4 54 5 43 12 88 78 67 57 48 14 89 79 69 60 50 16 90 80 71 62 54 18 91 81 72 64 56 20 91 82 74 66 58 22 92 82 75 68 60 24 92 84 76 69 62 26 92 85 77 70 64 28 93 86 78 71 65 30 93 86 79 72 66 19. Find the relative humidity: dry bulb 22˚C wet bulb 19˚C _______75%_______% 20. Find the relative humidity: dry bulb 30˚C wet bulb 25˚C ______66%_________% 21. Suppose the relative humidity is 65% and the temperature of the dry-bulb is 28˚C. Find the wet bulb temperature. _________23°C____________˚C Matching: There is one extra choice. ___B__ 22. Clouds that form flat layers A. cirrus ___D__ 23. The process in which gas turns into a liquid B. stratus ___E__ 24. Clouds that form less than 2 km above the ground And look like fluffy cotton C. condensation D. evaporation ___I__ 25. Temperature at which condensation occurs E. cumulus ___A__ 26. Wispy, feathery clouds mad mostly of ice crystals F. rain gauge ___G__ 27. Forms of water such as rain, and sleet G. precipitation ___F__ 28. An instrument used to measure rain fall H. drought ___H__ 29. Water shortage caused by long periods of low Precipitation in an area Types of precipitation: 30. _____sleet______ rain falls through a layer of 0˚C and freezes I. dew point 31. _____rain_____ most common form of precipitation 32. _____freezing rain_________ rain that freezes when it hit the surface 33. ______snow______ falls as flakes 34. ____hail_______ round pellets of ice from cumulonimbus clouds Identify the following clouds: A B C D E A. _______________cumulus________________ B. _______________stratus_________________________ C. ______________cirrus__________________________ D. ____________cumulonimbus___________________________ E. ____________fog___________________________