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Humidity Precipitation Clouds

Total questions: 55

Worksheet time: 2hrs 2mins

Name
Class
Date
1.
The phase change from water vapor to liquid water is known as
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
2.
Dew Point is the
a)
temperature air cools down to reach condensation
b)
temperature where ice melts to liquid water
c)
temperature where ice turns directly into water vapor
d)
time of day when dew on the ground disappears
3.
Dew is most likely to form 
a)
after heavy rain on a humid day
b)
when humid air contacts cold ground
c)
when the snow on the ground melts
d)
during windy nights when it rains
4.
During which part of the water cycle does a cloud form?
a)
Evaporation
b)
Precipitation
c)
condensation
d)
Run off
5.
As the air temperature increases, the air's capacity for water vapor: 
a)
increases
b)
decreases
c)
remains the same
d)
is unrelated to air temperature and can either increase or decrease
6.
The temperature to which air must be cooled in order to become saturated is the: 
a)
Relative Humidity
b)
Mixing Ratio
c)
Dew Point Temperature
d)
Wet-bulb Temperature
7.

Which will hold more water, warm air or cold air?

a)

Warm Air

b)

Cold AIr

8.

Dew is what?

a)

Water that is pushed out by plants

b)

Water that was a gas in the atmosphere, but when it cooled turned into liquid water touching a solid object

c)

Water from the ground

9.
Which weather instrument is useful in measuring relative humidity?
a)
barometer
b)
anemometer
c)
psychrometer
d)
wind vane
10.
The amount of water vapor in the atmosphere compared to how much it could hold.
a)
Saturation
b)
Vaporicity
c)
Absolute Humidity
d)
Relative Humidity
11.
Which cylinder represents the warmest air?
a)
1
b)
3
c)
4
d)
5
12.
Which cylinder represents the highest relative humidity? 
a)
1
b)
3
c)
4
d)
5
13.

What is the relative humidity when the dry-bulb temperature is 16°C and the wet-bulb temperature is 14°C?

a)

90%

b)

80%

c)

14%

d)

13%

14.

When the dry-bulb temperature is 14°C and the wet-bulb temperature is 8°C, the relative humidity is

a)

6%

b)

22%

c)

25%

d)

41%

15.

When the dry-bulb temperature is 22°C and the wet-bulb temperature is 13°C, the relative humidity is

a)

10%

b)

33%

c)

41%

d)

59%

16.

6. The weather instrument above is used to determine dewpoint and relative humidity. Based on the temperature shown, the approximate dewpoint and relative humidity are

a)

–19°C and 4%

b)

–5°C and 25%

c)

8°C and 4O%

d)

12°C and 53%

17.

A sling psychrometer shows a dry-bulb reading of 14°C and a wet-bulb reading of 9°C. What are the dewpoint and the relative humidity?

a)

-10°C and 16%

b)

-10°C and 50%

c)

4°C and 16%

d)

4°C and 50%

18.

What is the approximate dewpoint temperature if the

dry-bulb temperature is 18ºC and the wet-bulb

temperature is 11ºC?

a)

1º C

b)

-10º C

c)

7º C

d)

4º C

19.
What type of cloud is shown (in the pic behind the question)?
a)
cumulus
b)
cirrus
c)
stratus
20.
Identify this cloud type (in the pic behind the question)
a)
cirrus
b)
cumulus
c)
stratus
d)
cumulonimbus
21.
Identify this cloud type (in the pic behind the question)
a)
cirrus
b)
cumulus
c)
stratus
d)
cumulonimbus
22.
This is sometimes called a thunderhead cloud. It looks very tall like mountains and heavy rain comes from it. 
a)
Cumulus
b)
Cirrus
c)
Stratus
d)
Cumulonimbus
23.
Clouds form when...
a)
liquid water is heated and evaporates to become water vapor in the atmosphere.
b)
water vapor in the atmosphere cools and condenses becoming water droplets in the atmosphere
c)
water droplets float upwards and gather together in the atmosphere to form a cloud.
24.
This type of fog forms as the colder ground cools warmer air overnight.
a)
steam fog
b)
advection fog
c)
radiation fog
d)
upslope fog
25.
When warm moist air moves in over colder ground or colder ocean water, this type of fog forms.
a)
steam fog
b)
advection fog
c)
radiation fog
d)
upslope fog
26.
Nimbostratus and cumulonimbus clouds can signal what type of upcoming weather?
a)
fair skies
b)
hot, sunny weather
c)
windy weather
d)
rainy weather
27.

At 25 C, air can hold 23 grams of water vapor. If the air had 16 grams of water vapor, what would the relative humidity be?

a)

25%

b)

70%

c)

64%

d)

92%

28.
These clouds are wispy or curly, white, thin & feather-like
a)
cumulus
b)
cumulonimbus
c)
cirrus
d)
stratus
29.

When there is less air pressure, the air expands and _____________.

a)

Falls

b)

Turns

c)

Spikes

d)

Cools

30.

What is relative humidity?

a)

humidity that is related to other humidity

b)

condensation

c)

the amount of water in the air at any given time

d)

the amount of water in the air compared to the amount of water the air can hold - a ratio

31.

Another name for Absolute Humidity is ___________.

a)

air pressure

b)

specific humidity

c)

relative humidity

d)

dew point

32.

if you keep water content the same and increase the air temperature, RH will ______.

a)

increase

b)

stay the same

c)

decrease

d)

increase, then decrease

33.

As the DPT approaches the Air Temperature the chances of rain will

a)

not change

b)

increase

c)

decrease

d)

increase then decrease

34.
At what time would you expect dew to form on the ground? (USE THE CHART BEHIND THE QUESTION)
a)
6AM
b)
6PM
c)
4AM
d)
12PM
35.
________is the instrument used to measure air pressure.
a)
barometer
b)
thermometer
c)
mercury
d)
watch
36.
As you climb up a mountain what happens to the air pressure?
a)
decreases
b)
increases
c)
stays the same
37.
What tool do we use to measure temperature?
a)
Thermometer
b)
Ruler
c)
Balance
d)
Magnifying Glass
38.
In convection currents, warm air ________. 
a)
rises
b)
sinks
39.
In convection currents, cool air is __________ dense. 
a)
less
b)
more
40.
Which liquid is more dense?
a)
A
b)
B
41.
In convection currents, warm air is __________ dense. 
a)
less
b)
more
42.
Describe the type of precipitation that occurs when falling through an atmosphere that is warm/hot. 
a)
Rain
b)
Snow 
c)
Sleet 
d)
Freezing Rain 
43.
How does freezing rain form 
a)
by hail 
b)
when the temperature is warm
c)
when the temperature is cold and it rains 
d)
freezing rain 
44.
Define Precipitation
a)
solids falling from the sky 
b)
precipitation 
c)
any form of water that falls from clouds and reaches earth's surface 
d)
liquids falling from the sky 
45.
Lvl 2: Precipitation that falls to the planet as balls of ice. They can be small and large.
a)
Rain
b)
Sleet
c)
Hail
d)
Snow
46.
Lvl 2: Precipitation that falls to the planet as ice crystals.
a)
Rain
b)
Sleet
c)
Hail
d)
Snow
47.
Lvl 3: This diagram shows how a certain type of precipitation is formed. Water drops are caught in up-drafts and down-drafts, over and over, before they fall to Earth as
a)
dew.
b)
hail.
c)
rain.
d)
snow.
48.
Lvl 3: A large thunderstorm is forming inside a nimbus cloud. The wind is very strong and the temperature varies between 40 degrees and 30 degrees Fahrenheit. Which form of precipitation will most likely form?
a)
Rain
b)
Hail
c)
Snow
d)
None
49.
Water droplets condense around _____________ to form a cloud.
a)
dust
b)
water
c)
cloud particles
d)
precipitation
50.
These clouds are lowest in altitude. They bring rain or snow and are layered like a blanket.
a)
Cirrus
b)
Stratus
c)
Cumulonimbus
d)
Cumulus
51.
What type of precipitation forms when raindrops fall through cold layer of air and freeze before they hit the ground? 
a)
Sleet
b)
Snow
c)
Rain
d)
Hail
52.
Which of the following is an example of a cloud of vertical development?
a)
nimbostratus cloud
b)
cumulonimbus cloud
c)
cirrus cloud
d)
stratus cloud
53.
What three ingredients must you add to a cloud formation bottle model to create a cloud? 
a)
dust, water vapor, and low air presssure
b)
dust, water vapor and high air pressure
c)
water droplets, low air pressure, and heat
d)
coolness, dust and low pressure 
54.
Fog is simply a ______ that has formed close to the ground. 
a)
rain storm
b)
dew
c)
frost
d)
cloud
55.
This forms when water vapor changes from gas directly to ice crystals on a surface when the temperature at that surface is at freezing point or below.
a)
frost
b)
dew
c)
stratus
d)
cirrus

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