Atmosphere Basics
Relative Humidity
Clouds
Air Masses and Fronts
Stuff and Junk
100
In which atmospheric layer does weather occur?
Troposphere
100
Cold air has a _____ ability to hold water vapor than warm air.
lower
100
Where does air have to move in order for clouds to form?
It must rise
100
What are the two characteristics we use to describe an air mass.
temperature and moisture (humidity)
100
What is the fuel for a growing hurricane?
Warm ocean water
200
Air moves from areas of ___ pressure to ___ pressure.
High; Low
200
As the temperature of air reaches saturation it is called...
dew point
200
This must be present in the atmosphere where water is trying to condense. Without it, no cloud will form.
Condensation nuclei
200
What type of front is most closely associated with severe weather and storms?
Cold Front
200
What causes a sea breeze?
Land warming more then water, rising and causing low pressure, air moves in from high pressure sea
300
Why does air over water heat more slowly than air over land?
Water has a high specific heat (absorbs a great deal of energy to change it's temperature)
300
As water condenses out of air, what happens to the temperature of the air around it?
It increases, due to latent heat
300
What are the 4 ways to lift air and form clouds.
surface heating, convergence, orographic lifting, frontal wedging
300
If a cP air mass met an mT air mass in Kansas, which one would be most likely to go up and over the other one?
mT would go up and over
300
What causes global winds?
Air heated at the equator
400
What happens to air as it's temperature increases? (2 things)
Wiggles faster and becomes less dense
400
A 1-kg mass of air is capable of holding 20 g of water vapor but currently is holding only 6 g. What is the relative humidity of the air?
30%
400
Why don't all clouds produce rain?
Droplets have to become large enough for gravity to pull them out of the cloud
400
What causes air masses to have the characteristics of temperature and humidity that they have?
Where they originally come from
400
A tropical cyclone that forms in the southern hemisphere would spin in which direction?
Clockwise
500
A 75.3 g object displaces 52.0 mL of water when placed in a graduated cylinder. What is the density of the substance?
1.45 g/mL
500
If 35C air contains 7g of water, at what temperature will that air reach dew point?
10 C
500
What air pressure conditions lead to possible cloud formation.?
Low pressure
500
What type of weather would we expect at a warm front?
Long term steady precipitation
500
Imagine a mountain range that runs north and south from the Tropic of Capricorn to the equator in the southern hemisphere. All other things being equal, which side of the mountain range would receive more precipitation?
The eastern side
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