01 The Atmosphere

Fill in the gap in the following text so as to make a true statement.

Except for the amount of CO₂ and O₃, the composition of the ‘dry air’ atmosphere is considered to be uniform up to approximately _______km above the Earth’s surface.

• 36

• 50

• 80

• 132

What percentage by volume is the amount of Nitrogen in the earth’s atmosphere?

• 1%

• 4%

• 21%

• 78%

• 98

Where in the atmosphere is the majority of the Earth’s atmospheric molecular mass to be found?

• in the Troposphere

• in the Stratosphere

• in the Tropopause

• in the Mesosphere

Where is Ozone formed in the Earth’s atmosphere?

• In the Thermosphere

• In the lower levels of the Stratosphere

• In the upper levels of the Tropopause

• In the lower levels of the Troposphere

Where in the earth’s atmosphere is it possible that as much as 4% of the total atmosphere can be water vapour?

• Mid-latitude regions

• Polar regions

• Tropical regions

What word describes a no change of temperature with increasing height in the lower regions of the stratosphere?

• Isothermal

• Inversion

• Neutrothermal

• Impossible to determine from the information provided

TRUE or FALSE?

Carbon dioxide in the atmosphere absorbs terrestrial (earth) radiation

• TRUE

• FALSE

What is the temperature of the tropopause in regions where the height of the tropopause is approximately 36, 000 ft (for example over New Zealand)?

• minus 15 degrees Celsius

• minus 36 degrees Celsius

• minus 56 degrees Celsius

• minus 65 degrees Celsius

When is the Tropopause over New Zealand the lowest height AMSL?

• January

• April

• July

• October

What is the ICAO ISA value for atmospheric pressure at sea level?

• 1 hPa per 30 feet

• 15ºC

• 1013.25 hPa

• 1.225 kg/m3

• Minus 56 ºC