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Flashcards in Meteorology Deck (42):
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what are the four main layers of the atmosphere?

troposphere
stratosphere
mesosphere
thermosphere

1

What are the main gasses in the atmosphere?

nitrogen and oxygen

2

what does cumulus mean?

puffy

3

what does stratus mean?

layered

4

what does nimbus mean

rain

5

what does cirrus mean

high, feathery

6

what does strato mean

low

7

what does alto mean

middle

8

what does cirro mean

high level

9

what does hydrosphere mean

all the water on earth

10

what is relative humitidy

a value the shows how near the air is to its maximum capacity for holding water

11

what is dew point

temperature at which condensation occurs

12

what is saturated air

when there is so much water vapor in the air that the rate of condensation equals the rate of evaporation

13

what is a sling psychrometer

an instrument that works on the principle that evaporation is a cooling process

14

what is condensation nuclei

tiny particles that water vapor condenses onto

15

what is air pressure

weight of the atmosphere per unit of area

16

what is air pressure measured with?

barometer

17

what are the two types of barometers

aneroid and mercury

18

how does air pressure change with altitude?

increases higher you go

19

is cold temperature a characteristic of high pressure or low pressure system

high

20

is poor weather a characteristic of a high pressure or low pressure system

low

21

are warm temperatures a characteristic of high or low pressure systems

low

22

is fair weather a characteristic of high or low pressure system

high

23

is air moving in a characteristic of a high pressure or low pressure system

low

24

is air moving out a characteristic of high or low pressure system

high

25

is a rising barometer a characteristic of high or low pressure system

high

26

what is a line connecting points of equal pressure

isobar

27

Wind always moves from ____ pressure to _____ pressure

high, low

28

what are winds named by

direction it comes from

29

why do winds curve

Coriolis effect

30

what is the Coriolis effect caused by

rotation of the earth

31

what direction to winds curve in the northern hemisphere

right

32

what direction do the winds curve in the Southern Hemisphere

left

33

what wind moves weather across the US

Low level prevailing westerlies and high level jet stream

34

what is an air mass

a large body of air in the lower troposphere that has similar characteristics throughout these characteristics are determined depending upon the area over which it forms

35

what clouds are formed with warm fronts

cirrus cirrostratus altostratus nimbostratus

36

what are the clouds in a cold front

altocumulus cumulonimbus

37

what is the weather during a cold front

wind, heavy rains, thunderstorms occur after the front passes

38

what clouds are in a stationary front

cirrus cirrostratus altostratus nimbostratus

39

what is the weather during a stationary front

rains along the entire front

40

what type of clouds are there during an occluded front

cumulonimbus

41

what type of weather occurs during an occluded front

strong winds, heavy rains, tornadoes