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___________________________