Water in the Air
Air Masses and Fronts
Severe Weather
Forecasting the Weather
Any Topic
100
What is the amount of water vapor in the air called?
Humidity
100
What is the area in which 2 air masses meet called?
Front
100
Lightning is an electric discharge between a positively charged area and a..........
Negatively charged area
100
What weather instrument measures air temperature?
Thermometer
100
Wind moving in 2 directions over a prairie makes air in the middle spin. This is the beginning of a _____
Tornado
200
What is the process in which liquid water turns to vapor?
Evaporation
200
In which of these would a continental polar air mass form? 1) Pacific Ocean 2) Northern Canada 3) Gulf of Mexico 4) Desert Southwest
2) Northern Canada
200
A tornado is dangerous mostly because of its......
Strong winds
200
What weather instrument measures wind speed?
Anemometer
200
What kind of weather would an anticyclone bring?
Dry and clear
300
What describes an altocumulus cloud?
Puffy middle cloud
300
What kind of weather does a stationary front bring?
many days of cloudy wet weather
300
A storm surge is the most dangerous part of a _______
Hurricane
300
Images of weather systems on TV come from.....
Weather satellites
300
What carries water from precipitation to the ocean?
Runoff
400
Which statement about hail is correct? 1) It is rain that falls through a layer of freezing air. 2) It may be sent up into the clouds many times. 3) It forms in winter in low stratus clouds. 4) It is a liquid form of precipitation.
2) It may be sent up into the clouds many times.
400
What causes changes in weather?
Air masses move and meet.
400
Going to a room without windows is a safety measure during a ______
Tornado
400
What is the purpose of isobars? 1) to measure air pressure 2) to describe the weather conditions in a weather station 3) to find out what form precipitation will take 4) to connect points of equal air pressure on a weather map
4) to connect points of equal pressure on a weather map
400
During a lightning strike, why is lightning seen before thunder is heard?
Light travels faster than sound.
500
What is the temperature to which air must cool to be saturated?
Dew point
500
Why do meteorologists track cyclones and anticyclones? 1) They are dangerous forms of severe weather. 2) They help predict stormy or clear weather. 3) They help forecast weather weeks into the future. 4) They give more accurate facts than fronts.
2) They help predict stormy or clear weather.
500
Which statement about tornadoes is correct? 1) They are a very common part of thunderstorms. 2) 75% of the world's tornadoes happen in the US. 3) Their danger is mainly from the heavy rains they bring. 4) They are the strongest storms on earth.
2) 75% of the world's tornadoes happen in the US.
500
What weather instruments consists of 2 thermometers?
Psychrometer
500
On a weather map, a large H appears over the area in which you live. What kind of weather can you expect?
Dry and clear (high pressure system)
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