Unit 1A - Weather hazards

Question 1

Define wind?

Answer 1

large scale movements of air caused by differences in air pressure

Question 2

What are differences in air caused by?

Answer 2

differences in temperature between the equator and all the poles

Question 3

Where does wind move?

Answer 3

from an area of high concentration to an area of low concentration

Question 4

What is wind a part of?

Answer 4

global atmospheric circulation loops or cells

Question 5

How is a low pressure belt with rising air, clouds and rain caused?

Answer 5

at the equator the sun warms the earth, transferring heat to the air above, causing it to rise

Question 6

At what point does the air cool and move out?

Answer 6

30 degrees

Question 7

At what point of the equator does the cool air sink, creating a high pressure belt with cloudless skies and little rainfall?

Answer 7

30 degrees north and south

Question 8

What happens at 60 degrees north and south of the equator?

Answer 8

warmer surface winds meet colder air from the poles

Question 9

Some of air moves back towards the equator, and the rest moves towards the…?

Answer 9

poles

Question 10

What does global atmospheric circulation causes?

Answer 10

areas to have some types of weather more often than others - effecting the climate

Question 11

At what temperature do tropical storms form?

Answer 11

27 degrees or higher

Question 12

What happens when warm, moist air rises and condensation occurs?

Answer 12

releases huge amounts of energy, making storms powerful, surface winds increased

Question 13

Where do tropical storms move?

Answer 13

the west, easterly winds near the equator

Question 14

What does the earth’s rotation deflect?

Answer 14

paths of the wind, causes storms to spin