PP1 Ch6 Weather pt2

What cloud types would indicate convective turbulence?

• Cirrus clouds.

• Nimbostratus clouds.

• Towering cumulus clouds.

Crests of standing mountain waves may be marked by stationary, lens-shaped clouds known as

• mammatocumulus clouds.

• roll clouds.

• standing lenticular clouds.

Thunderstorms reach their greatest intensity during the

• cumulus stage.

• mature stage.

• downdraft stage.

The conditions necessary for the formation of cumulonimbus clouds are a lifting action and

• unstable air containing an excess of condensation nuclei.

• either stable or unstable air.

• unstable, moist air.

How does frost affect the lifting surfaces of an airplane on takeoff?

• Frost may prevent the airplane from becoming airborne at normal takeoff speed.

• Frost will change the camber of the wing, increasing lift during takeoff.

• Frost may cause the airplane to become airborne with a lower angle of attack at a lower indicated airspeed.

The wind condition that requires maximum caution when avoiding wake turbulence on landing is a

• strong headwind.

• light, quartering tailwind.

• light, quartering headwind.

A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is known as a

• dry line.

• squall line.

• prefrontal system.

When landing behind a large aircraft, the pilot should avoid wake turbulence by staying

• above the large aircraft's final approach path and landing before the large aircraft's touchdown point.

• below the large aircraft's final approach path and landing before the large aircraft's touchdown point.

• above the large aircraft's final approach path and landing beyond the large aircraft's touchdown point.

What feature is normally associated with the cumulus stage of a thunderstorm?

• Continuous updraft.

• Frequent lightning.

• Roll cloud.

Wingtip vortices are created only when an aircraft is

• developing lift.

• heavily loaded.

• operating at high airspeeds.