Structure Of Atmosphere Flashcards
What is the composition of the atmosphere?
Nitrogen 78.09%
Oxygen 20.95%
Argon 0.93%
CO2 0.03%
How is water present in the atmosphere?
Vapour
Liquid
Solid
List the 4 layers of the atmosphere from top to bottom
Ionosphere
Mesosphere
Stratosphere
Troposphere
Which layer contains 99% of water?
Troposphere
How deep is the troposphere at the equator?
16km
How deep is the troposphere at 50 N latitude?
11km
How deep is the troposphere at the pole?
9km
What is the upper limit of the troposphere called?
The tropopause
Air temperature decreases with height.
True or False?
True.
How high does the stratosphere extend?
50km from the troposphere
The ozone absorbs the suns radiation. True or False?
True.
Where is the pressure most, at the top or the bottom of the atmosphere?
Bottom
What is the equation for pressure?
Pressure=Depth x Density
What does density depend on?
The air temperature and water content
What units are used to measure pressure?
Hectopascal
Inches of Mercury
What errors does the mercury barometer suffer from?
Gravity error
Index error
Temperature error
What does android mean?
Without liquid
How does the aneroid barometer work?
Utilises a partially evacuated capsule that reacts to changes in pressure by expanding or contracting.
What error does the aneroid barometer suffer from?
Index error
How does the aneroid barometer overcome its error?
Comes with a correction chart
What is the MSL pressure?
1013.25 hPa
1 hPa is equivalent to how many feet at MSL
30ft
1 hPa is equivalent to how many feet at 20,000ft
50ft
1 hPa is equivalent to how many feet at 40,000ft
100ft
