Download 1. The atmosphere is a layer of gases that surround the earth_

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Meteorology Study Guide
1. The atmosphere is a layer of
gases that surround the earth_.
2. The 2 most abundant gases in the Earth’s atmosphere are Oxygen and Nitrogen.
3. Instruments that is used to measure air pressure is called a Barometer.
4. As you rise farther in the atmosphere, air pressure decreases
(gets less dense).
5. When climbing a high mountain, you get out of breathe easily because of air is
6. Why is air pressure greatest at the Earth’s surface? Because
less dense.
gravity pulls gas
molecules toward the surface.
7. The condition of the Earth’s atmosphere at a particular time and place is known as
Weather
8. The map below shows the locations of low-pressure and high-pressure belts across North and South
America. Why is pressure low at the equator relative to pressure at 30°N or 30°S latitude?
Warmer temperatures = low pressure
9. What factors affect the temperature of precipitation such that snow falls in the winter and rain falls in
the summer? Change in the
amount of direct sunlight that reaches the Earth’s
surface.
10. Wind occurs because of differences in air pressure.
11. What causes the air pressure differences that cause winds?
Unequal heating of Earth’s surface.
12. The winds that blow from 30O latitude in both hemispheres toward the equator are called the
trade winds.
13. The winds that blow from 30o to 60o latitude in both hemispheres are called the
prevailing
westerlies.
14. The winds that blow from the poles to 60o latitude in both hemispheres are called the
polar
easterlies.
15. Why does most of the rain for Georgia come from Alabama to our west? Global Winds
16. What causes local winds? Temperature differences
17. At the seashore late in the afternoon on a hot sunny day, a person often feels a strong breeze coming
The warm air over the
ocean rushes in to replace the cool air that rises over the land.
in from the ocean. Which of the following is the reason for the breeze?
18. What type of wind is being described? Warm air above the ocean rises and cooler air above the beach
moves to take its place. Land Breeze
19. An air mass gets its temperature and humidity from the
area over which is forms.
20. Cold air masses that form at high latitudes are called Polar.
21. An air mass forms over the Gulf of Mexico and moves northeast across Georgia. What weather
conditions are likely to prevail in Georgia? Warm and humid.
22. If the meteorologist describes an arctic, dry air mass. What type of air mass is he describing?
Continental Polar (CP)
Match the labels to the map. Write the letters in the space provided.
Source Regions for Air Masses That Influence Weather in North America
D __ 23.
mP
A __ 24.
cP
C __ 25.
B. ___26.
mT
cT
27. What kind of weather does a stationary front bring?
weather.
Several days of cloudy, wet
Use the Diagram to answer the following questions (28-29).
28. The diagram above represents the meeting of two air masses. The air mass on the left is formed over
a polar region and the air mass on the right formed over the tropical region. Which type of front is
pictured in the diagram? Cold Front
29. What kind of weather is associated with this type of front?
Thunderstorms and heavy rain
30. If there is a tornado warning in your area, you should.
Go to a room with no windows.
31. Under what conditions is a hurricane most likely to form? When
thunderstorms
Develop and begin to spin over warm ocean water.