Download Unit 2 Review Key

Unit 2 Review Key
Role of Oceans and Weather
1. What causes temperatures at the equator to be warmer
than near the poles?
The equator receives more direct sunlight due to the tilt
of the Earth
2. How does the ocean affect the climate of coastal areas
during the summer? and during the winter?
Summers will be cooler and winters will be warmer than they
would be otherwise
3. Using the current map,
describe the climate of the
west coast of North America.
The climate will be cool because of the cold current that runs
the length of the west coast of North America
4. Draw and label a diagram representing a Sea Breeze.
5. Draw and label a diagram representing Land Breeze.
6. Why do Land Breezes occur?
The land cools down quickly while the sea stays warm.
Above the sea, warm air rises and the wind blows away
from the coast toward the sea.
7. Why do Sea Breezes occur?
The land heats up more quickly than the sea. Above the land,
warm air rises and the wind blows toward the coast from the
sea.
8. The picture on the right shows a test
tube filled with liquids of different
densities. Identify the following
substances:
Cold # 3 Cold, Salty # 2 Warm# 1
9. Below is a list of cities and their temperature ranges. Explain why
these cities have different temperature ranges.
San Diego and Charleston are located along the coast, so their climates are
moderated by the ocean. Salt Lake City and Boulder are located inland far from the
coast, so the land cools off and heats up quickly making a wider range of
temperatures.
●
●
●
●
San Diego has a temperature range of 10
Charleston, SC has a temperature range of 11
Salt Lake City, UT has a temperature range of 21
Boulder, CO has a temperature range of 31
10. What is the primary energy source for weather events
on earth?
The sun
11. What causes winds?
Differences in air pressure – the bigger the difference the
stronger the wind
12. Fill in the circles below with a picture demonstrating
molecules of warm water vs. molecules of cold water. Which
one is more dense?
Warm Water (less dense)
Cold Water (more dense)
13. Color and label the convection current.
14. Why do convection currents take place?
Warm air/water rises and cold air/water sinks, creating
circulation patterns
15. What are the conditions associated with a low pressure
system?
Cloudy and rainy because the air particles near the center of
a low pressure system have a lower density so they tend to
rise
16. What are the conditions associated with a high pressure
system?
Clear and sunny because the air particles near the center of a
high pressure system have a higher density so they tend to
sink.
17. How do oceans affect the global climate?
The ocean keeps the planet’s overall temperature
moderate, not too hot and not too cold
18. Fill in the chart for fronts:
Type of
Front
Description
Weather it
brings
Cold
Cold fronts occur
Thunderstorms Clear, crisp air follows a
when a colder, drier often occur
cold front
air mass pushes out
a warmer, wetter
one
Warm
Warm fronts occur
when a warmer air
mass pushes out
cooler, drier air
Fog often
occurs, light
rain
Weather after the front
Usually warm humid
days follow a warm
front
Symbol
19. What direction do fronts typically move in the U.S.?
West to East
20. Why do winds seem to curve to the right in the Northern
Hemisphere and curve to the left in the Southern
Hemisphere?
The Coriolis Effect – the Earth is rotating counterclockwise
High
Low
21. Wind always moves from ________pressure
to _______
pressure.
22. What does the symbol shown at the right tell you about
the wind conditions?
Cloudy and the wind is blowing from the northwest toward the
southeast at 20 knots
23. Shade in where the warm current would move during an
El Nino year.
24. Describe what happens during an El Nino year.
Global wind patterns shift, no
longer pushing the warm
surface water from the
Americas. This causes more
evaporation and precipitation
East of its usual place.
During the El Nino weather
patterns change around the
world.
25. Why do hurricanes usually form off the coast of Africa?
The water temperature is warm
26. Why does a hurricane lose strength when it moves from
the ocean onto land?
They lose their source of heat and moisture. Friction over
land also reduces the circulation of surface winds, weakening
a hurricane
How will you prepare for
Friday’s test?
Take a few moments to come up with a plan.
Will you study the review packet? Use the
flashcards you created or quizlet? Ask
someone to quiz you? Make sure to put aside
time to study!! And get a good night of sleep!