Name: ______________________Date: __________________ Class: __________
1. Define Convection: warming and cooling of a liquid or air through a process
of circulation.
2. Draw arrows to illustrate the correct
circulation of air in the apparatus to the
left.
3. Warm air _rises_ and cold air
____sinks___.
4. What causes all weather on Earth?
Unequal heating of the surface by the
SUN.
Land vs Sea Breezes
5. . By looking at the picture on the
left; what is the process through which
the sunlight warms the earth’s surface?
During day: land is warmer, air rises over
land, sinks over water, breeze comes
from the sea ( SEA BREEZE)
AT Night: water is warmer, air rises over
water, land is cooler, air sinks over land
Breeze comes from the land ( Land
Breeze)
Air Masses take on the characteristics of the area they form over. Describe the
characteristics of the following air masses.
6. cT : dry, warm,( Arizona)
7. cP: dry, cold ( from Canada)
8. mT: humid, warm ( gulf )
9. mP: humid , cold ( Seattle )
10.Which air mass formed over
region labeled “A”? mT
11.How will it influence the
weather over the eastern US? Bring warm and humid air, increase possibility
of rain
Name: ______________________Date: __________________ Class: __________
Fronts
Complete the following table
Description
Cold air collides with
warm air
What kind of front?
12.
Cold front
Possible Weather
13.
Rain,
thunderstorms, hail
Warm air collides with
cold air and pushed
aloft.
14.
15.
Steady rain,
clouds ahead of the
front
Warm front
16. Which front could bring tornados and hail? Cold front, quick uplift of air
17.Which front could bring a scenario of freezing rain? Warm front ( freezes on
the way down)
18. What kind of weather is associated with a High pressure cell?
Clear skies, sunny
19.What kind of weather is associated with a Low pressure cell?
Cloudy, possible rain, thunderstorms, tornados, hail
Ocean’s influence on Weather
20.Which latitudes
have more rising air and
possible rain? Why?
0 deg and 60 deg, rising
air
21.Which latitude would have more desserts? Why? 30 deg, due to dry
descending air
22. Describe the climate for each of the letter shown in the diagram above.
Name: ______________________Date: __________________ Class: __________
A: hot and humid/ B: cool and humid (mountains)/C: dry,hot ( leeward side
of the mountain/ D: hot and humid, rainy due to the windward side of the
mountain
23.What causes a hurricane?
Intensified Low Air pressure system fed
by warm moisture from the ocean
24.Where does a hurricane form?
Over tropical ocean waters
25. How do ocean currents influence
weather ? keep the coastal regions
warmer in the winter and cooler in
the summer.
26. Where do the majority of the hurricanes form that threaten the US?
Off the west coast of Africa
Practice Weather Map
27.Describe the current weather for
a. Pittsburgh: warm and humid , cloudy , chance of rain
b. New York : not as warm,mild temps, cloudy, humid, chance of rain
c. Lake Superior: clear skies, colder, sunny
28. Predict the change
in weather for Pittsburgh
over the next 24 hours?
Increase change of rain,
possible showers or thunder
Showers, followed by much
cooler temperatures in the
50’s.
Name: ______________________Date: __________________ Class: __________
28. The evaporation of water into the atmosphere builds clouds which can lead to
thunderstorms. Where would you expect more storm clouds to form?
a. in the cold northwest areas
b. in humid coastal areas
c. over dry desert areas
d. all areas get the same amount of storm cloud formation
29. The fronts shown on a weather map are best described as
a.
b.
c.
d.
boundaries between different air masses
boundaries between different wind belts
areas experiencing clear skies with light winds
areas experiencing extremely warm air temperatures
30. Compared to the air at the poles, the air at the equator is warmer and
a.
b.
c.
d.
less dense, creating an area of high pressure as it rises
less dense, creating an area of low pressure as it rises
denser, creating an area of low pressure as it rises
denser, creating an area of high pressure as it rises
31. Wind energy is actually an indirect form of
a. electricity
b. magnetic energy
c .solar energy
d. nuclear energy
32 Wind develops as a result of differences in
a.Air temperature and humidity
b.relative humidity and dew point
c. condensation and evaporation rates
d. atmospheric pressure and temperature
33. Why are cloudy skies less common over deserts?
a.
b.
High humidity prevents cloud formation
Constant winds keep water from evaporating
Name: ______________________Date: __________________ Class: __________
c.
d.
There is not enough moisture in the air for clouds to form
Evaporation rates in the desert are much higher than other places