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- 1. Multiple Choice
Trevor watched as the barometer on his front porch showed a change in air pressure.
What happened as Trevor was watching the air pressure change?
A high pressure system moved into the area.
A low pressure system moved into the area.
A low pressure system turned into a high pressure system.
A high pressure system turned into a low pressure system.
- 2. Multiple Choice
Wendy measures the temperature outside of her school every ten minutes. She records her data in the table.
Wendy notices that as she takes her last two measurements the wind begins to pick up.
Which of the following is a reasonable weather forecast that Wendy could make?
Temperatures will likely reach freezing within the hour.
Snow is likely in the next week.
The temperature will increase rapidly in the next few minutes.
Rain is likely in the next few minutes.
- 3. Multiple Choice
Martha is measuring the barometric pressure in her back yard every thirty minutes. She records her data in the table.
Which of the following weather forecasts is reasonable?
Tomorrow will be sunnier than today.
Next week will be warmer than this week.
A high pressure system is moving into the area.
A low pressure system is moving into the area.
- 4. Multiple Choice
A weather front occurs when two air masses of differing temperatures meet. When a cold air mass meets a warm air mass, for example, what will happen to the warm air?
It will sink.
It will reverse directions.
It will rise.
Nothing will happen.
- 5. Multiple Choice
Fey measures wind speed every fifteen minutes for one hour in her back yard. Her data is recorded.
As Fey takes her last two measurements she notices that the temperature drops suddenly.
Which of the following weather predictions would be best for Fey to make?
A tsunami is approaching.
A cold front is moving in.
The air's humidity is decreasing.
A hail storm is approaching.
- 6. Multiple Choice
A weather map of the United States is shown.
If this map represents today's weather, which of these is most likely true about the upcoming weather in Phoenix?
Heavy rain will fall for several days.
Tomorrow will be warmer than today.
Tomorrow will be cooler than today.
Strong winds will blow for several days.
- 7. Multiple Choice
Brandy has built a computer model of a weather system. She has included information about bodies of water, the Sun, and the atmosphere. Brandy decides to decrease the amount of atmospheric water vapor in her model. How will this likely affect the precipitation in her model?
There will be more precipitation.
The precipitation will not change.
There will be less precipitation.
It will rain constantly.
- 8. Multiple Choice
In the weather map, there is a cold air mass overtaking a warm air mass in the central portion of the U.S. This interaction is likely to cause severe thunderstorms. What type of pressure system is associated with this interaction?
a stationary pressure system
a low pressure system
a mixed pressure system
a high pressure system
- 9. Multiple Choice
What causes wind?
gravity pull caused by the moon moving farther away from the earth
air flowing from a high pressure area to a low pressure area
differences in land elevation on a continent
the same angle at which the rays from the sun hit the atmosphere
- 10. Multiple Choice
A cold air mass and a warm air mass are predicted to meet. What type of weather can be expected between the two air masses?
dry weather
cold weather
stormy weather
warm weather
- 11. Multiple Choice
What type of system is associated with weather that is cold but sunny with almost no clouds in the sky?
tropical system
circulatory system
low pressure system
high pressure system
- 12. Multiple Choice
Raul is on vacation at location X on the map below. His classmate, Cassy, is at location Y. Raul's location has a temperature of 14 C and a pressure of 1035 m.
Cassy takes pressure and temperature measurements at the same time as Raul, and she also adjusts her measurements to correct for her elevation above sea level. Which of the following tables could be her data?
- 13. Multiple Choice
According to a weather map, a cold air mass is moving into a given area where a warm air mass is currently located. What type of weather should be expected as the cold air mass approaches?
rain, followed by warmer weather
rain, followed by cooler weather
dry conditions, followed by warmer weather
dry conditions with little wind
- 14. Multiple Choice
Severe thunderstorms are possible in the central portion of the U.S. in the weather map above. Air is _______ the low pressure system near these thunderstorms and is _______ the high pressure system to the north.
converging toward; diverging from
diverging from; diverging from
diverging from; converging toward
converging toward; converging toward
- 15. Multiple Choice
Which of the following statements about air masses is true?
Air masses are responsible for creating holes in the ozone layer.
Air masses are areas of condensed water vapor, which are also known as clouds.
Air masses are created by patterns of heating and cooling of the Earth's surface.
Air masses maintain the same moisture and temperature as they move over new areas.
- 16. Multiple Choice
The image was generated by the National Oceanic and Atmospheric Administration (NOAA) to monitor weather systems that could evolve into tropical cyclones. Satellite images and weather data have been entered into a computer model, which has identified three systems that might become tropical cyclones. Each system is associated with a different likelihood of turning into a tropical cyclone.
The figure suggests that there is _______ in the computer models used to make weather predictions.
perfect accuracy
some uncertainty
zero accuracy
no error
- 17. Multiple Choice
What type of system is associated with weather that has lots of clouds and thunderstorms with the possibility of tornadoes?
high pressure system
low pressure system
arctic system
circulatory system
- 18. Multiple Choice
To prepare for the first day of school, Jeremy watches the weather forecast on television. The weather map he sees is shown. "H" indicates a high pressure system, "L" indicates a low pressure system, the blue line with triangular symbols indicates a cold front, and the red line with semicircular symbols indicates a warm front. A mixture of the two indicates a stationary front.
If Jeremy lives at point _______, he can expect mild weather conditions for his first day of school.
W
Z
X
Y
- 19. Multiple Choice
The weather map shows a zone of possible flash flooding in front of a cold front.
If the cold front continues to move toward the southeast,
the zone of possible flash flooding will move toward the northeast.
the zone of possible flash flooding will enlarge to cover the entire United States.
no flash flooding will occur.
the zone of possible flash flooding will also move toward the southeast.
- 20. Multiple Choice
The image shows a thunderstorm.
Thunderstorms occur as a result of convection in the atmosphere when two air masses that contain different amounts of thermal energy interact.
What type of air does cold, dense air often converge with to form a thunderstorm?
warmer and more dense
colder and less dense
colder and more dense
warmer and less dense
- 21. Multiple Choice
The weather map shows a high pressure zone in the western U.S., centered just east of California and over the state of Nevada.
What kind of weather is likely to occur in that zone?
dry with clear skies
humid with overcast skies
tornadoes
a hurricane
- 22. Multiple Choice
A weather map of the United States is shown.
Which of these is most likely true about the front located in the area north of Austin?
It will bring a short period of snow to the area north of Austin.
It is moving quickly to the northeast.
It will arrive over Phoenix in the next few days.
It will bring a long period of rain to the area north of Austin.
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