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- 1. Fill in the Blank
The pressure exerted by the weight of air above:
- 2. Fill in the Blank
Air that moves horizontally:
- 3. Fill in the Blank
Lines on a map that connect places of equal air pressure:
- 4. Fill in the Blank
States that all free-moving objects or fluids are deflected by the Earth’s rotation:
- 5. Multiple Choice
Which of these is NOT a standard air pressure measurements at sea level?
998.3 millibars
29.92 inches of mercury
14.7 pounds per square inch
1 atmosphere
1 kilogram per square centimeter
- 6. Multiple Choice
Which units of air pressure will you see in weather reports in the US?
Millibars
Inches of mercury
Pounds per square inch
Atmospheres
- 7. Multiple Choice
How does an aneroid barometer work?
The chamber in the barometer expands when the air pressure decreases, and contracts when the air pressure increases
The mercury is forced up the tube when the air pressure increases, and the mercury falls when air pressure decreases
When the temperature drops, that means the air pressure will drop as well
Air pressure increases with an increase in cloud cover, so the barometer measures the amount of sunlight reaching the instrument
- 8. Multiple Choice
How is a barograph better than an aneroid barometer?
It connects to a computer so the readings are more accurate
It measures changes in air pressure over time, so you can monitor if the pressure is increasing or decreasing
A barograph measures humidity as well as air pressure, so you can tell if precipitation is likely
A barograph will work at any altitude so it is more useful than an aneroid barometer
- 9. Multiple Choice
Use the following air pressures recorded throughout the day to decide what is likely to happen with the weather: 1012 mb at 9am, 1003 mb at 12pm, 998 mb at 3pm, 991 mb at 6pm, 887 mb at 9pm
Most likely clear skies and fair weather are moving in
Most likely warm temperatures are moving in
Most likely clouds and precipitation are moving in
Most likely the weather will be unchanging
- 10. Multiple Choice
What causes wind?
Air flowing from areas of high pressure to areas of low pressure
Air flowing from areas of low pressure to areas of high pressure
Air flowing from areas of high altitude to areas of low altitude because of gravity
Air flowing from areas of low altitude to areas of high altitude because of heat differences in the lower atmosphere verses the higher atmosphere
- 11. Fill in the Blank
The ultimate energy source for wind:
- 12. Multiple Choice
Which of these is NOT a force that controls wind?
The pressure gradient force
The Coriolis Effect
Friction
Ocean currents
- 13. Multiple Choice
If isobars are closely spaced that would create:
Faster winds
Slower winds
Winds that blow toward the North
Winds that blow toward the South
- 14. Multiple Choice
Which way are the winds deflected in the Northern Hemisphere due to the Coriolis Effect?
To the left
To the North
To the South
To the right
- 15. Multiple Choice
If no other force acts on the winds, which way will they flow with respect to isobars?
Parallel to the isobars
At a 45⁰ angle to the isobars
Perpendicular to the isobars
At a 120⁰ angle to the isobars
- 16. Multiple Choice
Why do jet streams tend to move faster than surface winds?
They are at higher altitudes so there is less gravity acting on them
There is very little friction acting on them
Because they are at higher altitudes the temperatures are lower, and colder winds blow faster
The higher layers of atmosphere rotate faster than the lower layers as the Earth spins
- 17. Fill in the Blank
Identify Item #1 in the picture:
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