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Unit 1.3: Weather Tools & Forecasting

Total questions: 50

Worksheet time: 1hrs 7mins

Name
Class
Date
1.
The amount of water vapor in the atmosphere compared to how much it could hold.
a)
Saturation
b)
Vaporicity
c)
Humidity
d)
Relative Humidity
2.
_____________ is the temperature to which air must be cooled to reach saturation.
a)
Humid point
b)
Temperature index
c)
Relative Humidity
d)
Dew Point
3.
Due to the Coriolis Effect, wind in the Northern Hemisphere is deflected to the _____
a)
Right
b)
Left
c)
North
d)
South
4.
When air is saturated, what is its relative humidity?
a)
25%
b)
75%
c)
100%
d)
50%
5.
A psychrometer or hygrometer would be used to measure _____
a)
air pressure
b)
wind speed
c)
humidity
d)
wind direction
6.
Which tool measures wind speed?
a)
anemometer
b)
speedometer
c)
barometer
d)
thermometer
7.
A line on a map that connects areas of equal temperature.
a)
Isobar
b)
Isoline
c)
Isotherm
8.
An instrument that measures air pressure
a)
thermometer
b)
barometer
c)
rain guage
d)
wind sock
9.
This weather instrument is an...
a)
wind vane
b)
anemometer
c)
barometer
d)
thermometer
10.
This weather instrument is a...
a)
anemometer
b)
barometer
c)
wind vane
d)
thermometer
11.
This weather instrument is a...
a)
rain gauge
b)
U.F.O.
c)
satellite
d)
anemometer
12.
This weather instrument is a...
a)
anemometer
b)
Christmas ornament
c)
wind vane
d)
barometer
13.
This instrument measures air pressure.
a)
anemometer
b)
barometer
c)
rain gauge
d)
thermometer
14.
An instrument used to measure the amount of rainfall
a)
barometer
b)
thermometer
c)
rain guage
d)
wind sock
15.
the amount of water vapor in the air
a)
warm front
b)
precipitation
c)
humidity
d)
air pressure
16.
An isobar map measures...
a)
Temperature
b)
Wind
c)
Precipitation
d)
Air pressure
17.

The closer the isobar lines are...

a)

The greater the pressure

b)

The colder the temperature

c)

The faster the wind

18.
The _____________ the isobars on a map are to/from one another the ___________ the wind.
a)
closer, slower
b)
closer, faster
c)
farther, faster
19.
Which instrument measures relative humidity?
a)
Psychrometer
b)
Thermometer
c)
Anemometer
d)
Barometer
20.
Name this tool. 
a)
Barometer
b)
Hygrometer
c)
Thermometer
d)
Ruler
21.
What is the name the name of this weather tool? 
a)
Rain Gauge
b)
Telescope
c)
Wind Vane
d)
Anemometer
22.
In what areas of the world do hurricanes form?
a)
Warm ocean waters
b)
Polar ocean waters
c)
On lakes and rivers
d)
Over the central plains of the U.S
23.
Direction hurricanes spin in the northern hemisphere
a)
clock-wise
b)
counter clock-wise
24.
Why does cold water or land cause a hurricane to weaken?
a)
because the high pressure of the hurricane can't handle the cold water from a low pressure system
b)
because the land always cools faster than the ocean
c)
because the land breeze shreds the hurricane
d)
because they cut off the energy supply to the hurricane
25.
How fast do winds have to be before it is considered a hurricane?
a)
50 mph
b)
75 mph
c)
100 mph
d)
40 mph
26.

What type of Tropical storm can be found near Japan?

a)

typhoon

b)

cyclone

c)

Hurricane

27.

What type of Tropical storm can be found near Australia?

a)

cyclone

b)

typhoon

c)

hurricane

28.
The Saffir-Simpson Scale measures
a)
Hurricane's rainfall
b)
Hurricane's area
c)
Hurricane's intensity
d)
Hurricane's storm surge
29.

How many categories of hurricanes are there?

a)

1

b)

2

c)

3

d)

4

e)

5

30.

When the air is full of water and has a relative humidity of 100% it is said to be ___.

a)

full

b)

humid

c)

saturated

d)

warm

31.

The amount of water vapor in the air is known as ___.

a)

dew point

b)

humidty

c)

relative humidity

d)

rain

32.

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

a)

Warm Air

b)

Cold AIr

33.
Which weather instrument is useful in measuring relative humidity?
a)
barometer
b)
anemometer
c)
psychrometer
d)
wind vane
34.
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
35.
The warmer the air the __________ water vapor it can hold.
a)
less
b)
more
36.
Which cylinder represents the warmest air?
a)
1
b)
3
c)
4
d)
5
37.
Which cylinder represents the highest relative humidity? 
a)
1
b)
3
c)
4
d)
5
38.
How does air temperature affect humidity?
a)
warmer air = lower humidity
colder air = higher humidty
b)
temperature does not affect humidity
c)
colder air = lower humidity
warmer air = higher humidity
d)
warm air and cold air = high humidity
39.

Using a sling psychrometer, the dry-bulb thermometer reads 76oF, and the wet-bulb reads 70oF. What is the relative humidity?

a)

70%

b)

72%

c)

74%

d)

78%

40.

Using a sling psychrometer, the dry-bulb thermometer reads 100oF. What would the wet-bulb thermometer read if the relative humidity is 54%?

a)

85oF

b)

90oF

c)

100oF

d)

115oF

41.

The relative humidity is 81% with a 4o difference between the two thermometers in a sling psychrometer. What is the dry-bulb reading?

a)

52oF

b)

68oF

c)

88oF

d)

not enough information to calculate

42.

The relative humidity is 81% with a 4o difference between the two thermometers in a sling psychrometer. What is the wet-bulb reading?

a)

48oF

b)

64oF

c)

72oF

d)

not enough information to calculate

43.

When hurricanes reach land, they tend to lose strength. Why does this happen?

a)

The lack of cold, dry air to power the storm

b)

An increase in warm, wet air

c)

An increase in cold, wet air

d)

A lack of warm, wet air to power the storm

44.

Which of the following is true?

a)

Tornadoes only form over water

b)

Tornadoes only form over land

c)

Tornadoes mostly form over land

d)

Tornadoes mostly form over water

45.

An increase in barometric pressure would most likely cause which of the following?

a)

precipitation to end

b)

precipitation to begin

c)

no change in precipitation

46.

A decrease in barometric pressure would most likely cause which of the following?

a)

precipitation to end

b)

precipitation to begin

c)

no change in precipitation

47.

This scale is used to track the intensity of hurricanes.

a)

Enhanced Fujita Scale

b)

Saffir-Simpson Scale

48.

This scale is used to track the intensity of tornadoes.

a)

Enhanced Fujita Scale

b)

Saffir-Simpson Scale

49.

All of the following are needed for a winter storm to be classified as a blizzard except...

a)

falling snow

b)

visibility under 1/4 mile from snow

c)

Winds of 35 mph or more

d)

Constant conditions for 3 or more consecutive hours

e)

All of these are needed for a blizzard

50.

What is the strongest category of hurricane?

a)

1

b)

2

c)

3

d)

4

e)

5

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