met 1

What, approximately, is the average height of the tropopause over the Equator?

• 8 km

• 16 km

• 11 km

• 50 km

What is the boundary between the troposphere and the stratosphere called?

• Ionosphere

• Stratosphere

• Atmosphere

• Tropopause

How does the height of the tropopause normally vary with lattitude in the Northern Hemisphere?

• It decreases from south to north

• It increases from south to north

• It remains constant from north to south

• It remains constant throughout the year.

The temperature at FL110 is -12°C. What will the temperature be at FL140 if the ICAO standard lapse rate is applied?

• -6°C

• -18 c

• -9°C

• -15°C

Atmosphere is heated by​____

• Solar radiation

• none

• From above.

• Heat from earth surface.

Which one of the following statements applies to the tropopause?

• It is, by definition, an isothermal layer

• It indicates a strong temperature lapse rate

• It is, by definition a temperature inversion

• It separates the troposphere from the stratosphere.

Tropopause is discontinuous at about

• 30°lat

• 40°lat

• 80°lat

• None

In the International Standard Atmosphere the decrease in temperature with height below 11 km is:

• 0.5°C/100 m

• 0.6°C/100 m

• 0.65°C/100 m

• 1°C/100 m

Mother of Pearl clouds occur in………….

• Mesosphere

• Thermosphere

• Stratosphere

• None

The 200 hPa pressure altitude level can vary in height. In temperate regions which of the following average heights is applicable?

• FL390

• FL300

• FL100

• FL50