3.3 Earth's Atmosphere Flashcards

1
Q

earths atmosphere is made of

A

nitrogen oxygen water vapor argon carbon dioxide and small amts of other glasses

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1
Q

atmosphere

A

mixture of gases that surrounds earth

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2
Q

which gas is the highest concentration in the atmosphere

A

nitrogen

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3
Q

which gas is the second highest concentration in the atmosphere

A

oxygen

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4
Q

how many layers of the atmosphere are there and what are their names

A

5 - troposphere stratosphere mesosphere thermosphere exosphere

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5
Q

how are the layers of the atmosphere distinguished

A

temperature

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6
Q

troposphere

A

layer that is closest to earth and where most of the earths weather and cloud making occurs

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7
Q

what is the densest layer

A

troposphere

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8
Q

troposphere is heated mostly by what

A

sun radiating off the earths surface

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9
Q

troposphere has a temp gradient that ____(increases/decreases) with altitude

A

decreases

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10
Q

stratosphere

A

layer above troposphere with ozone layer

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11
Q

what layer has the ozone layer

A

stratosphere

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12
Q

ozone layer

A

keeps about 95% of the sun’s harmful UV radiation from reaching the Earth’s surface

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13
Q

how does the ozone layer do its thing

A

Ozone molecules absorb UV radiation and release heat

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14
Q

the stratosphere has a temperature gradient that ____ (increases/decreases) with altitude

A

increases

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15
Q

mesosphere

A

layer above the stratosphere that is heated primarily by the stratosphere below

16
Q

the mesosphere has a temperature gradient that ____ (increases/decreases) with altitude

17
Q

the thermosphere has a temperature gradient that ____ (increases/decreases) with altitude

18
Q

thermosphere

A

low density of has molecules but the molecules absorb high energy radiation from sun

19
Q

exosphere

A

highest layer that has super low density of has molecules bc they usually escape into space

20
Q

why is global wind patter important

A

control where rains what species can survive etc

21
Q

why do we have wind patterns

22
Q

how does the sun affect wind patterns

A

sun hits equator more than poles so air at equator is hotter and more moist than poles

23
Q

hot air moves

24
hot air areas have ____ pressure
low
25
cold air areas have ___ pressure
high
26
convection cell
a circular pattern of a gas or liquid rising and falling as it becomes hotter and cooler
27
coriolis effect
circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere
28
Hadley cells
convection cells closes to the equator
29
ferrel cells
convection cells squished between the polar cells and the Hadley cells
30
polar cells
convection cells at the poles
31
what causes there to have diff convection cells in the hemispheres
movement of earth -- coriolis effect
32
winds are named after what
where theey come from
33
northeast trade winds
move west in Hadley cells
34
southeast trade winds
move west in Hadley cells
35
what causes wind patterns to become more complicated
the way there are oceans and land that absorb energy differently
36