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Meteorology > Structure Of Atmosphere > Flashcards

Structure Of Atmosphere Flashcards

1
Q

What is the composition of the atmosphere?

A

Nitrogen 78.09%
Oxygen 20.95%
Argon 0.93%
CO2 0.03%

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2
Q

How is water present in the atmosphere?

A

Vapour
Liquid
Solid

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3
Q

List the 4 layers of the atmosphere from top to bottom

A

Ionosphere
Mesosphere
Stratosphere
Troposphere

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4
Q

Which layer contains 99% of water?

A

Troposphere

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5
Q

How deep is the troposphere at the equator?

A

16km

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6
Q

How deep is the troposphere at 50 N latitude?

A

11km

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7
Q

How deep is the troposphere at the pole?

A

9km

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8
Q

What is the upper limit of the troposphere called?

A

The tropopause

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9
Q

Air temperature decreases with height.

True or False?

A

True.

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10
Q

How high does the stratosphere extend?

A

50km from the troposphere

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11
Q

The ozone absorbs the suns radiation. True or False?

A

True.

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12
Q

Where is the pressure most, at the top or the bottom of the atmosphere?

A

Bottom

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13
Q

What is the equation for pressure?

A

Pressure=Depth x Density

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14
Q

What does density depend on?

A

The air temperature and water content

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15
Q

What units are used to measure pressure?

A

Hectopascal

Inches of Mercury

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16
Q

What errors does the mercury barometer suffer from?

A

Gravity error
Index error
Temperature error

17
Q

What does android mean?

A

Without liquid

18
Q

How does the aneroid barometer work?

A

Utilises a partially evacuated capsule that reacts to changes in pressure by expanding or contracting.

19
Q

What error does the aneroid barometer suffer from?

A

Index error

20
Q

How does the aneroid barometer overcome its error?

A

Comes with a correction chart

21
Q

What is the MSL pressure?

A

1013.25 hPa

22
Q

1 hPa is equivalent to how many feet at MSL

A

30ft

23
Q

1 hPa is equivalent to how many feet at 20,000ft

A

50ft

24
Q

1 hPa is equivalent to how many feet at 40,000ft

A

100ft

Meteorology (17 decks)

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