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Pop Extra Credit UTD
Pop Extra Credit UTD
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1
What always flattens out a thunderstorm and keeps it from growing out of control?
Mesosphere
Tropopause
Stratospause
Thermosphere
2
What do we call precipitation that evaporates before hitting the ground?
Mist
Virga
No such thing
Fog
3
Where would you expect the friction force to be greatest?
Sahara Desert
Plains of Kansas
Mountains of West Virginia
Open waters of the Atlantic Ocean
4
What mostly determines the size of a hail stone that is produced by a thunderstorm?
The number of freezing nuclei in the cloud
The amount of snow in its cloud
How green the storm cloud is
The updraft speed within the cloud
5
What is the average air pressure at sea level?
14.7 pounds per square inch
29.92 inches of Mercury
All of the Above
1013.25 mb
6
This state is #1 at producing energy by harnessing the power of the wind.
California
Colorado
Florida
Texas
7
What type of cloud are these?
Undulatus Asperatus
Altostratus
Lenticular
Cumulonimbus
8
What type of cloud is this?
Stratus
Cirrostratus
Cirrocumulus
Altostratus
9
What must be true in order for the Collision-Coalescence process to produce raindrops?
Cloud drops must be different sizes
Clouds must have high bases
Cloud drops must be different shapes
Have both water and ice at the same time
10
At what temperature must water freeze even if there is no freezing nuclei?
32°F
-15°F
-40°F
-20°F
11
Why do we "correct" a weather station's air pressure reading to sea level?
To remove the influence of humidity on the reading
To remove the influence of elevation on the reading
To remove the influence of wind on the reading
To remove the influence of temperature on the reading
12
The width of the human hair is often larger than the diameter of a cloud droplet.
True
False
13
Snowflakes covered in ice are called what?
Frost
Graupel
Hail
Rime
14
What do we call the process when ice turns directly into water vapor gas?
sublimation
condensation
evaporation
deposition
15
What type of cloud is this?
NimboStratus
Cirrus Uncinus
Cumulonimbus
Altocumulus
16
What is the name of the FORCE that causes the air to move and thus creates the wind?
Coriolis Force
Pressure Gradient Force
Centripetal Force
Friction Force
17
What do we call the INSTRUMENT that makes a recording of the air pressure over time?
Barogram
Barograph
Seismograph
Barometer
18
When cold air sweeps across a body of warm water, what kind of fog forms?
frontal
advection
radiation
steam
19
Sleet covers objects with a thin layer of ice which can bring down trees and power lines.
True
False
20
About how big can a raindrop get before it shatters into smaller drops?
1 mm
5 mm
2 mm
10 mm
21
What type of cloud are these?
Cumulus
Cirrus
Stratus
Altostratus
22
What do we call liquid water that is below 32°F?
No such thing
Hyperchilly
Superchilled
Supercooled
23
When the air temperature goes down, what does the relative humidity usually do?
It stays the same
Not enough information to tell
It goes down
It goes up
24
When water droplets and ice crystals are close together, this process usually begins.
Adiabatic
Coalescence
Collision
Bergeron
25
The wind direction and speed represented by the following station model.
SE Wind at 15 knots
NW Wind at 15 knots
SW Wind at 15 knots
NE Wind at 15 knots
26
What would we call a wind that blows from the city to the surrounding countryside?
Noxious breeze
Country wind
An ill wind
City Breeze
27
What type of air exerts the HIGHEST atmospheric air pressure?
cold and humid
cold and dry
warm and dry
warm and humid
28
What do we call the process when water turns into ice?
Sublimation
Melting
Deposition
Freezing
29
The temperature inside a RISING air bubble always cools down.
True
False
30
When the air temperature cools down to the dew point temperature, what happens?
Fog can form
All of the above
Dew can form
Clouds can form
31
When an unsaturated (i.e., dry) air bubble rises, how fast does it cool down?
1°C for every kilometer
Depends on the air bubble size
10°C for every kilometer
5°C for every kilometer
32
Precipitation that consists of water drops less than 0.5 mm in diameter is called what?
Mini Rain
Drizzle
Showers
Virga
33
Clouds are classified based on TWO main properties. What are they?
The presence of rain or snow falling from them
Shape and Height above the ground
Color and Height above the ground
Shape and Color above the ground
34
A wind blowing in a STRAIGHT LINE when Pressure Gradient & Coriolis are equal is called _____.
the friction wind
the surface wind
the geogradient wind
the geostrophic wind
35
What do we call the process when water turns into water vapor gas?
Melting
Sublimation
Evaporation
Condensation
36
Anticyclones generally bring sunny skies and quiet weather.
True
False
37
When isobars on a weather map are close together, this means the winds will be strong.
True
False
38
When nearly saturated air flows up the side of a mountain, what type of fog forms?
Upmountain Fog
Uphill Fog
Upslope Fog
Adiabatic Fog
39
A diagram that reveals how much the wind blows from any given direction is called a ________.
wind vane
wind sock
wind chart
wind rose
40
Why do SURFACE winds blow ACROSS isobars rather than parallel to them?
Wind is thrown out of balance because of pressure gradient
Wind is thrown out of balance because of friction
Wind is thrown out of balance because of radiation
Wind is thrown out of balance because of Earth's rotation
41
What type of cloud are these?
Cirrocumulus
Cumulus Congestus
Nimbostratus
Altocumulus
42
What do we call the surfaces which water vapor jumps on forming tiny water droplets?
condensation nuclei
droplet surfaces
freezing nuclei
airborne debris
43
At what temperature do most freezing nuclei activate? This allows water to freeze.
0°C or 32°F
-40°C or -40°F
-18°C or 0°F
-15°C or 5°F
44
An airplane pilot flying due north will end up landing to the ____ of the initial flight path.
east
north
west
south
