Atmosphere Flashcards

1
Q

As height increases…

A

pressure decreases

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2
Q

pressure/volume equation

A

pressure x volume = number of moles x constant x temperature

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3
Q

atmosphere equation

A

p(o) x e (-z/h) or p(o) x e (mgh/kt)

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4
Q

why doesn’t mercury have an atmosphere

A

not a lot of gravity

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5
Q

why has Venus got high atmospheric pressure

A

CO2

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6
Q

mars

A

CO2, thin atmosphere

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7
Q

earths atmosphere

A

nitrogen/oxygen

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8
Q

early atmosphere

A

hydrogen/helium then volcanic degassing and formed water vapour/CO2. Oxygen formed from photon dissociation and formed ozone. Bacteria produced oxygen and CO2 reduced and oxygen increased

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9
Q

what happens to the atmosphere when you increase height

A

changes from oxygen/nitrogen to atomic oxygen

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10
Q

why does the atmosphere change to atomic oxygen

A

ionisation and no nitrogen

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11
Q

Ionosphere

A

upper layer of atmosphere, between exosphere and thermosphere, ionised by solar radiation, photons dislodge electrons

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12
Q

where does atomic oxygen come from

A

ionosphere

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13
Q

recombination

A

opposing force, where positive ions capture electrons

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14
Q

temperature higher up is controlled by …

A

ionisation/radiation

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15
Q

where does recombination occur

A

low altitude, where gas density decreases

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16
Q

what determines ionization

A

point of balance between 2 processes

17
Q

gas dissociation equation

A

E = h x f

18
Q

what’s h and f

A

h= planks constant (6.63 x 10(-34), f= frequency

19
Q

troposphere

A

temperature decreases, weather

20
Q

stratosphere

A

temperature increases, ozone absorbs radiation

21
Q

mesosphere

A

temperature decreases, coldest part, mixed gases

22
Q

thermosphere

A

temperature increases, gasses layer on each other

23
Q

what happens if there is no temperature variation

A

water will escape atmosphere

24
Q

exosphere

A

highest layer, light gases, atomic oxygen, hydrogen/helium, satellites

25
Q

what absorbs most radiation?

A

atmosphere, clouds, gases

26
Q

what wavelengths absorb radiation

A

UV/visible

27
Q

what wavelengths absorb CO2

A

infrared

28
Q

where is oxygen absorbed

A

ozone

29
Q

is earth in an equilibrium

A

yes

30
Q

why is there radiation differences

A

earths tilt

31
Q

convection

A

unequal heating of earth

32
Q

jet stream

A

when hot and cold air masses meet

33
Q

-z

A

altitude

34
Q

whats p(o)

A

pressure 101