Temperature: DGCA Aviation Meteorology questions

Question 1

The measurement of surface temperature is made:

Accepted Answer

at approximately 4 feet above ground level

Answer

at ground level

Answer

at approximately 10 metres from ground level

Answer

at approximately 4 metres above ground level

Question 2

The purpose of a “Stevenson screen” is to:

Accepted Answer

protect the thermometer from wind, weather and from direct sunshine

Answer

maintain a moist atmosphere so that the wet bulb thermometer can function correctly

Answer

prevent the mercury freezing in the low winter temperatures

Answer

keep the wet and dry bulb thermometers away from surface extremes of temperature

Question 3

If temperature remains constant with an increase in altitude there is:

Accepted Answer

an isothermal layer

Answer

an inversion

Answer

an inversion aloft

Answer

uniform lapse rate

Question 4

The surface of the earth is heated by:

Accepted Answer

short wave solar radiation

Answer

convection

Answer

conduction

Answer

long wave solar radiation

Question 5

Cloud cover will reduce diurnal variation of temperature because:

Accepted Answer

incoming solar radiation is reflected back to space and outgoing terrestrial radiation is re-radiated from the cloud layer back to the surface

Answer

incoming solar radiation is reflected back to space and outgoing terrestrial radiation is reflected back to earth

Answer

incoming solar radiation is re-radiated back to space and atmospheric heating by convection will stop at the level of the cloud layer

Answer

the cloud stops the sun’s rays getting through to the earth and also reduces outgoing conduction

10 more questions in this chapter