2517NSC Aviation meteorology Part 1 – Practice Exam

Terrestrial radiation occurs

Only by day

Continually

Only at night

Only with clear skies

The structure or type of cloud, such as stratiform or cumuliform, is determined by

The method by which the air is lifted.

The relative humidity of the air.

The prevalence of condensation nuclei.

The stability of the air before lifting occurs.

The amount of water vapour that air can hold largely depends on:

The dewpoint.

Air temperature.

Stability of air.

Atmospheric pressure.

Moist, stable air flowing upslope can be expected to:

Produce stratiform clouds.

Cause showers and thunderstorms.

Develop convective turbulence.

Produce cumuliform clouds.

The presence of lenticular alto cumulus clouds is a good indication of

An approaching storm.

Very strong turbulence.

Heavy icing conditions.

Smooth flying conditions.

What conditions are necessary for the formation of thunderstorms

High humidity, lifting force, and unstable conditions.

High humidity, high temperature, and cumulus clouds.

High humidity, lifting force, and cumulus clouds.

What cloud types would indicate convective turbulence

Cirrus clouds.

Nimbostratus clouds.

Towering cumulus clouds.

In which situation is advection fog most likely to form

A warm, moist air mass on the windward side of mountains.

A warm, moist air mass moving over a colder land surface.

A light breeze blowing colder air out to sea.

Drizzle falling from warm air into cold air.

The equatorial trough moves further north than it does south because

The mid-summer surface temperatures are higher at any given latitude in the northern hemisphere because of the greater land mass.

The earth's axis is inclined to the plane of its orbit

The earth is closer to the sun during the northern summer.

There is more warm ocean surface in the northern hemisphere

The layer of the atmosphere in which most convection takes place is

The stratosphere

The tropopause

The troposphere

The convection zone

Vertical movement within the atmosphere becomes less vigorous above the height of the tropopause because

The air above is sinking

Cloud formation makes the air heavier

The environment no longer gets colder with increased height

The environment is colder than the rising air

2517NSC Aviation meteorology Part 1 – Practice Exam

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