Severe Weather/El Nino/La Nina Question Preview (ID: 1380)


Review Game For Severe Weather/El Nino/La Nina Test. TEACHERS: click here for quick copy question ID numbers.

Thunder happens because
a) lightning hits the ground.
b) lightning heats the air and the air expands rapidly.
c) electricity makes a loud sound.
d) rain drops hit one another.

What causes the atmosphere to be unstable during a thunderstorm?
a) A lot of humidity.
b) Rapidly rising cold dry air.
c) Rapidly rising warm moist air.
d) A warm front.

El Nino happens because
a) Trade Winds weaken which doesn't bring up the cold water.
b) Trade Winds strengthen which doesn't bring up the cold water.
c) Trade Winds strengthen which brings up warm ocean water.
d) Trade Winds make the water cold.

What is the name of the scale used to measure tornadoes?
a) Moh's Scale
b) Tornado Scale
c) Saffir-Simpson Scale
d) Fujita Scale

What percent of all tornadoes occur in the United States?
a) 25%
b) 50%
c) 75%
d) 90%

For a thunderstorm to occur, the atmosphere must be unstable and
a) air near the earth's surface must be cold and dry.
b) air near the earth's surface must be warm and moist.
c) there needs to be a warm front.
d) cold air must rise rapidly.

Why does Tornado Alley experience the most tornadoes in the United States?
a) Tornadoes only travel in one direction down an alley in that area.
b) That is where there are the most warm fronts.
c) It is where the cool dry air (north) meets warm moist air (south) most frequently.
d) Because the land is flat.

During a La Nina year the
a) Trade Winds strengthen which brings up more cold water.
b) ocean surface temperatures of the Equatorial Pacific get warmer.
c) Trade Winds weaken which brings up less cold water.
d) Trade Winds strengthen which brings up more warm water.

What comes first in the development of a tornado?
a) Wind travels in two different directions.
b) A funnel cloud touches the ground.
c) The air begins to roll.
d) The roll of air turns vertical because of the updrafts.

Lightning occurs because
a) positively charged particles attract to other positively charged particles and there is an electrical discharge.
b) oppositely charged particles attract one another and there is an electrical discharge.
c) rains drops rub against one another.
d) negatively charged particles attract to other negatively charged particles and there is an electrical discharge.

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