Weather and Climate Part 2 Flashcards Preview

Science 7 Grade > Weather and Climate Part 2 > Flashcards

Flashcards in Weather and Climate Part 2 Deck (32):
1

How do clouds form?

They are formed from moist air, smoke, dust particles, and lowered air pressure. Those allow air to expand and cool.

2

What happens to air pressure when density, temperature, water vapor, and elevation all increase.

Density relates directly to air pressure so they would both be increased. The other 3 don't relate so air pressure is the opposite so it's down.

3

Low pressure is followed by several days of rainy weather, why?

Low air pressure causes air masses move apart, the warm air rises and clouds form. Rain is related to water vapor so that would be increased and air pressure would be down.

4

The higher you travel the ______ the air pressure gets, the lower you travel the ______ the air pressure.

Lower & higher.

5

In the US, a southern coastal area has lower air pressure than an inland area farther north, why?

Areas in the south are warmer than the north, meaning the air pressure is low. Air masses are spread apart. Being on the coast increases water vapor decreasing air pressure.

6

Why does it take longer to fly from Milwaukee to Los Angeles than it does to fly in the opposite direction? (Jet streams)

It takes longer because you are going against the jet stream going there. Coming back pilots can take advantage of it to increase their speed.

7

What type of weather would you expect for the jet stream to bring if it is flowing down from Canada?

It would bring cold weather that is dry.

8

What type of weather would you expect for the jet stream to bring if it is flowing up from the Gulf of Mexico?

Warm weather that is humid(moist)

9

What are three things that affect temperature?

Latitude, elevation, and ocean currents.

10

What are two things that affect precipitation?

Mountain ranges and prevailing winds.

11

What causes climate?

Temperature and precipitation.

12

Less latitude = ______ temp.
_____ latitude = lower temp.

Higher and more.

13

Higher elevation = more spread out molecules. So the air is less?

Dense

14

Where are warm water currents from?

Equator

15

What are prevailing winds?

Winds that blow from one direction over certain points, makes more precipitation.

16

Mountains have two side which are?

Windward and leeward
.

17

What can cool air not hold on mountains?

Molecules.

18

The windward side of the mountain recieves more ___ and the leeward recieves _____ rain.

Rain and less

19

If latitude increases what decreases?

Temperature.

20

If elevation increases what decreases?

Temperature

21

Ocean currents warm ____ coastal areas and cool ____ coastal areas.

Eastern and Western.

22

Low pressure belts are at? (2 and creates lots or rain)

0 degrees and 60 degrees north

23

Low pressure belts are at 30 degrees north and south. What weather?

Dry usually deserts.

24

Previaling winds determines what of a mountain?

Windward and leeward side.

25

Where do cold ocean currents come from?

Poles

26

Air pressure may become low when large air masses move apart in the upper atmosphere. True or False?

True

27

Winds are caused by what?

Similarities in air pressure sit to unequal heating of the air.

28

Warm air rises and moves towards ____ and cold air sinks and moves towards ____.

Poles and equator

29

What is the reason why the doldrums and horse latitudes have weak winds?

The air is rising or sinking here causing air to move mostly vertically.

30

What is the Coriolis effect?

The shift in path or any fluid or object moving above the surface of the earth.

31

What is the Coriolis effect caused by!

The earths rotation on its axis.

32

What are jet streams?

Narrow belts of strong high-speed air that flows from west to east.