Weather Flashcards

(38 cards)

1
Q

Weather

A

The short term state of the atmosphere,including temperature,humidity, precipitation,wind, and visibility

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2
Q

Humidity

A

the amount of water vapor in the air

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3
Q

relative humidity

A

The ratio of the amount of water vapor in the air to the maximum amount of water vapor the air can hold at a set temperature

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4
Q

Condensation

A

The change of state from a gas to a liquid

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5
Q

dew point

A

The temperature at which a gas condenses into a liquid

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6
Q

psychrometer

A

An instrument that is used to measure relative humidity

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7
Q

cloud

A

a collection of small water droplets or ice crystals suspended in the air, which forms when the air is cooled and condensation occurs

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8
Q

cumulus Clouds

A

Puffy, white clouds that tend to have flat bottoms

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9
Q

cumulonimbus cloud

A

Thunderstorms come from this kind of cumulus clouds

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10
Q

stratus clouds

A

clouds that form in layers

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11
Q

Nimbostratus

A

are dark stratus clouds that usually produce light to heavy continuous

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12
Q

cirrus Clouds

A

Thin, feathery, white clouds found at high altitudes

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13
Q

cirrocumulus cloud

A

A cumulus cloud that forms high in the atmosphere

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14
Q

Middle clouds

A

made up of both water drops and ice crystals

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15
Q

Low clouds

A

made up of water drops

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16
Q

HIgh Clouds

A

Made up of ice crystals

17
Q

Precipitation

A

any form of water that falls to the earth’s surface from the clouds

18
Q

rain

A

moisture condensed from the atmosphere that falls visibly in separate drops

19
Q

Sleet

A

forms when rain falls through layer of freezing air

20
Q

Snow

A

when temperatures are so cold that water vapor changes directly into a solid

21
Q

Hail

A

Balls or lumps of ice that falls from clouds

22
Q

air mass

A

large body of air where temperature and moisture content are constant throughout

23
Q

front

A

the boundary between air masses of different densities and usually different temperatures

24
Q

cyclones

A

an area in the atmosphere that has lower pressure than the surrounding area and has winds that spiral toward the center

25
anticyclones
the rotation of air around a high-pressure center in the direction opposite to Earth's rotation
26
Lightning
an electric discharge that takes place between two oppositely charged surfaces, such as between a cloud and the ground, between two clouds, or between two parts of the same cloud
27
Thunder
the sound caused by the rapid expansion of air along an electrical strike
28
Thunderstorms
a usually brief, heavy storm that consists of rain,strong winds, lightning, and thunder
29
Tornado
a destructive, rotating column of air that has very high wind speeds,is visible as a funnel-shaped cloud, and touches the ground
30
Hurricane
a severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center
31
flash flood
a flood that rises that rises and falls very suddenly
32
watch
a weather alert that lets people know that a tornado may happen
33
warning
a weather alert that lets people know that a tornado has been spotted
34
thermometer
an instrument that measures and indicates temperature
35
Barometer
an instrument that measures atmospheric pressure
36
anemometer
37
Fog
A stratus cloud that has formed near the ground
38
storm surge
a wall of water that builds up over the ocean because of the strong winds and low atmospheric pressure.