BJU Earth Science 8. Chapter 20 Test

tornado.

A "hook" appearing in the Doppler radar image of a severe storm is often the sign of a

False

A hurricane's storm swell causes hail and rain.

False

A maritime polar air mass contains dry, relatively warm air, while the continental tropical air mass contains moist, cold air.

False

Air masses of differing temperatures and humidity's often mix.

False

Air masses take on the wind speed and temperature of the source regions.

Option 1 Answer: the Doppler radar and satellites save many lives by predicting danger before it occurs so that people can be more prepared. Option 2 Answer: winter storms can deprive humans of a source of warmth (heat) and electricity/power. They might even prevent one from having a sufficient amount of food and liquids to survive. Option 3 Answer: a hurricane must have water to form so an ocean or gulf is an necessary factor for them to be able to form.

Answer one of the following questions using complete sentences. (3 points) Option 1: How does the development and use of Doppler radar and weather satellites demonstrate love for others? Option 2: What are some of the dangers of winter storms? Option 3: What factors affect where a hurricane forms?

Question: shows cloud cover Correct Answer: B Question: gives wind speed and direction Correct Answer: A Question: shows types of clouds Correct Answer: E Question: shows the temperature Correct Answer: D Question: shows the precipitation Correct Answer: C

Diagram Exercise: Match the clue with the letter from the figure.

True

Hurricanes lose intensity when they move over land or cooler water.

True

Hurricanes never form over land.

1 km (0.6 mi)

If the time between a lightning flash and the sound of thunder is 3 s, how far has the sound traveled?

orographic lifting.

The Atacama Desert in Chile exists because moisture is dropped as snow and rain on one side of the Andes Mountains, leaving little moisture in the air on the other side. This rain shadow effect is caused by

False

The Enhanced Fujita-Pearson Scale measures the wind direction of a hurricane.

True

In the western Pacific, hurricanes are called typhoons.

False

It is the extremely low pressure inside a tornado's funnel that can cause buildings to explode.

Question: a powerful, rotating storm that is likely to spawn a tornado Correct Answer: supercell Question: a line of violent thunderstorms along a cold front Correct Answer: squall line Question: cloud-to-ground or cloud-to-cloud electrical discharge and the greatest danger in a thunderstorm Correct Answer: lightning Question: a hurricane in the Indian Ocean Correct Answer: cyclone Question: huge rolling waves produced far out in the ocean that precede the arrival of a hurricane Correct Answer: storm swell Question: lines on a weather map connecting areas of equal pressure Correct Answer: isobars

Match each description with the answer that correctly completes the statement. Answers are only used once.

Question: occurs when a colder air mass is replacing a warmer air mass Correct Answer: cold front Question: a large body of air that has fairly uniform conditions Correct Answer: air mass Question: the boundary between two air masses Correct Answer: front Question: a front that occurs when a warm air mass is trapped between two colliding cooler air masses Correct Answer: occluded front Question: occurs when a warmer air mass is replacing a colder air mass Correct Answer: warm front Question: a cumulonimbus cloud that often has an anvil-shaped top Correct Answer: thunderhead

Match each description with the answer that correctly completes the statement. Answers are only used once.

True

The National Weather Service releases a set of four synoptic maps daily.

True

Most interactions among air masses cause precipitation.

tropical cyclones and storms

Names are assigned to which of the following?

True

Pressure in the eye of a hurricane is lower than in the outer part of the hurricane.

True

Rotating wind pressure and updraft are the most destructive features of a tornado.

cold

Which type of front involves two air masses where a warm existing air mass rises to make way for the incoming cold air mass?

stationary

The weather in an area stays virtually the same for an entire week. What kind of front probably exists between the nearby air masses?

False

Thunderstorms develop only in the summer when the air is moist and warm.

True

Tornadoes are more common and more powerful in the United States than in any other country.

crouch down out in the open.

While hiking, you are surprised by a severe thunderstorm with lightning. The safest thing for you to do would be to

convergence

Winds flowing from different directions that collide force air masses aloft. Cloud formation and storms often result. What is the meteorological term for this process?

tornado

Which kind of violent storm has the greatest wind speed?

All of these can.

Which of the following can affect the path of a hurricane?

hurricane

Which of the following is not associated with a single cumulonimbus cloud?

Saffir-Simpson scale

Which of the following terms is not associated with tornadoes?

a winter storm system that brings snow in from the Atlantic Ocean

Which of these descriptions most accurately describes a Nor'easter?