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Thunderstorms
Tornadoes
Hurricanes
Weather Safety
Weather Instruments
100
Which of the following atmospheric conditions produces thunderstorms? A. warm, moist air near Earth's surface and an unstable atmosphere B. cold, dry air near Earth's surface and an unstable atmosphere C. an unstable atmosphere D. warm, moist air near Earth's surface
A
100

A tornado usually starts out as a ______

Funnel cloud

100
In order to be a hurricane a storm must A. cause much damage B. travel thousands of miles C. form over the Pacific Ocean D. have wind speeds of at least 120 km/hr
D
100

What is the most dangerous part of a thunderstorm?

Lightning

100

What weather instrument is used to measure rainfall?

Rain Gauge

200

When do Thunderstorms usually occur?

Usually during spring and summer.

200

The sky usually turns what color before a tornado?

Green

200

When will a hurricane usually lose energy?

When it moves over land or grows cold.

200

If you know a severe dust storm is coming, what should you do?

Get inside and shut all windows and doors. If you are in a car, pull over and shut it down.

200

What weather instrument is used to measure temperature?

Thermometer

300

What type of fronts often bring thunderstorms?

Occluded Fronts, or Cold Fronts.

300
What does a tornado start out as?
Funnel Cloud
300

What is the primary factor in causing hurricanes to form?

Solar energy from the sun heating water over the ocean, creating thunderstorms.

300

True or false, you should stay near your windows during a tornado.

FALSE

300

What weather instrument is used to measure wind speed?

Anemometer

400
An electric discharge between two oppositely charged surfaces is
Lightning
400
What percent of the world's tornados occur in the United States?
75%
400

What is the center of a hurricane called? Is it calm or stormy?

The eye, calm.

400
What is the best thing to do during a flood?
Find a high place and wait out the flood
400

What weather instrument is used to measure atmospheric pressure?

Barometer

500

The sound caused by hot air rapidly expanding along a lightning strike is called

Thunder

500

When do tornados happen?

Usually spring and early summer

500
What is most hurricane damage caused by?
Floods
500
Where is the best place to go during a tornado?
basement or cellar
500

What weather instrument is used to measure humidity?

Hygrometer