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Flashcards in Geology Deck (54):
1

What is an instrument used to observe air pressure?

Barometer

2

What is the measure of the amount of energy in air molecules?

Temperature

3

What are the scales used to measure temperature

Celsius, Fahrenheit, Kelvin, and Degree

4

What are lines drawn on a map that show areas of the same temperature?

Isotherms

5

What is it when something changes from a liquid to a gas?

Evaporation

6

What is it when something changes from a gas to a solid on a cooler surface?

Condensation

7

What is the amount of water vapor present in the air?

Specific Humidity

8

What is it when the specific humidity equals the air capacity for holding water vapor?

Capacity

9

What are instruments for measuring relative humidity?

Hydrometers

10

What is high fog, mist, or haze?

Dew

11

What type of clouds are thin feathery or tufted, above 7000 meters, and always made of ice crystals

Cirrus clouds

12

What type of clouds are low sheets or cloud layers found at different altitudes?

Stratus clouds

13

What type of clouds are piled in thick fluffy masses that are formed by vertical rising air currents?

Cumulus clouds

14

What type of clouds are high clouds?

Alto clouds

15

What type of clouds are rain clouds?

Nimbus clouds

16

What type of clouds are thunderclouds?

Cumulonimbus clouds

17

How do raindrops form?

1. Water-cloud process
2. Ice process

18

List the forms of precipitation

Sleet, hail, and snow

19

What are raindrops that fall through freezing rain that are always small pellets of ice?

Sleet

20

What is formed in thunderstorms where they begin as frozen raindrops. The updraft pushes ice back into the clouds and another layer of ice is added until it is heavy and it falls

Hail

21

What is it when water freezes and forms crystals then falls

Snow

22

Why do baseballs fly farther at higher altitudes?

There are less air molecules

23

What are formed where a high pressure system and a low pressure system meet. Warm humid air mixes with cooler drier air and forms clouds and possibly storms.

Fronts

24

What direction does a low pressure system move?

Counterclockwise

25

What direction does a high pressure system move?

Clockwork

26

What kind of weather does a low pressure system produce?

Overcast/ rainy

27

What kind of weather does a high pressure system produce?

Sunny

28

What is the rivers of wind high in the atmosphere formed along the upper air boundaries of large masses of warm and cold air?

Jet stream

29

How does the jet stream change during the summer?

It moves northward into Canada

30

What happens to the jet stream during a major cold outbreak?

It often dives south

31

What is a storm with lightning?

Thunderstorm

32

What defines a thunderstorm?

Lightning

33

What causes a thunderstorm and how does it form?

Lightning heats air around it, which causes the air to expand. The air begins to contrast as it cools

34

How can you estimate your distance from lightning?

Count the time between seeing lighting and hearing thunder

35

How fast does sound travel

One mile every five seconds

36

How far away can you be hit by lightning?

Ten miles

37

What are the two top locations for being struck by lightning?

1. Wide open space
2. Near a tall tree

38

What fuels a hurricane?

Warm air

39

What is lightning that hits the ground?

Cloud to Ground

40

What is lightning that is triggered between positive and negative charges in the cloud?

Cloud Cloud

41

What is lightning that spreads across the sky without hitting the ground?

Spider lightning

42

How is the earth's atmosphere heated?

Radiation, convection, and condensation

43

How are people struck by lightning?

1. Direct strike
2. Splash from tree
3. Through the ground, going up one leg and out the other

44

What happens when lightning strikes the body?

1. Rain/sweat turn into steam, clothes are blown off
2. Loss of consciousness
3. Intense muscle contraction

45

If there is no shelter, what is the best thing to do during a storm?

Crouch on the ground on the balls of your feet

46

What is winds at different heights, blowing at different speeds and different directions?

Wind sheer

47

What is a super cell?

Mesocyclone

48

What is it when tornados are possible?

Watch

49

What is it when tornados are going to happen?

Warning

50

Why is it important to have tornado chasers on the ground during a tornado?

To know if the tornado actually touches the ground/ground truth

51

What is the scale for a tornado

Fujita Scale

52

What is a violently rotating column of air touching the ground from a thunderstorm?

Tornado

53

What causes the most damage during tornados?

Flying debree

54

Do you see wind, explain

No, you can see what is in the wind