Exam 5: Condensation Dew Fog and Clouds

In infrared-enhanced images,clouds with the coldest (highest)tops are typically assigned the colors ____ or ____.

The cloud with the greatest vertical growth is

Nuclei with a radius of less than 0.1 µm are referred to as ____ nuclei.

On an ordinary day,a volume of air about the size of your index finger contains between ____ and ____ particles.

List one or more key identifying features for each of the ten basic cloud types.Which cloud types might have fairly similar appearances and thus be difficult to identify?

All clouds form in rising air.

How can you visually distinguish between cumulus,altocumulus,and cirrocumulus clouds?

The cooling of the ground to produce dew is mainly the result of

Satellite images taken of clouds at night use

Light or moderate-but-steady precipitation is most often associated with ____ clouds.

Radiation fog forms best on a

Explain how dew,frozen dew,and visible frost form.

Noctilucent clouds,meaning "luminous night clouds" are best seen at ____,during the ____ at latitudes poleward of 50 degrees.

Contrails form due to the heating of air by aircraft engine exhaust.

Suppose the sky is covered with stratus clouds.How might you determine whether middle or high clouds are also present?

A dim,"watery" Sun visible through a gray sheet-like cloud layer is often a good indication of ____ clouds.

The condensation nuclei most favorable for producing clouds (called cloud condensation nuclei)have radii of ____________________ µm or more.

Abercromby's and Hildebrandsson's cloud classification system divides cloud forms into four primary cloud groups - ____________________ clouds,____________________ clouds,and ____________________ clouds;the fourth group contains clouds showing more vertical than horizontal development.

Fog that most often forms as warm rain falls into a cold layer of surface air is called

Nacreous clouds form in the ____.