Chapter 7

The activation temperature of most ice-forming nuclei is ______ 0 °C.

Hygroscopic nuclei ______ water molecules.

Hygroscopic nuclei

The relative humidity within a cloud is ______ 100 percent.

Source(s) of condensation nuclei:

The British naturalist who is credited with being among the first to devise a classification of cloud types is

Of the following cloud types, which one is coldest?

Of the following cloud types, which one is warmest?

Extreme nocturnal radiational cooling occurs when

A cloud that forms when warm air overrides cold air is

All of the following clouds typically have relatively low bases with the exception of

cirrus clouds are typically composed of

usually, only drizzle falls from

Clouds at temperatures between 0 °C and -9 °C are typically composed of

A ______cloud develops as a consequence of local convection.

The convective condensation level (CCL) closely corresponds in altitude to the base of a ______ cloud.

Which one of the following cloud types would most likely be responsible for producing heavy rain?

A cloud that exhibits considerable vertical development is

A cloud that may be cold at the top and warm at low levels:

Cumulonimbus (thunderstorm) clouds typically are

Disk shaped, mountain-wave clouds are known as

Mountain waves

A rarely seen cloud that forms in the upper mesosphere and may be composed of ice deposited on meteoric dust:

All of the following clouds may be formed by waves propagating horizontally within the atmosphere with the exception of _____.

To be considered fog, visibility must be restricted to ______or less. Otherwise, the suspension is called mist.

In dense fog, the mixing ratio is ______ the saturation mixing ratio.

Persistent radiation fog is likely to develop on a

advection fog forms when

Fog formed when cold dry air streams over the surface of a relatively warm body of water is known as

At the same pressure, cold air is ______ warm air and ______.

The type of fog formed in spring when mild humid air flows over an old snow cover is

At saturation and at the same temperature, the vapor pressure is greater over ______ than over ______.

Which one of the following has the greatest terminal velocity?

For a given particle, the terminal velocity is ______in air than in water.

Most precipitation that falls in middle latitudes originates in ______ clouds.

Most precipitation that falls in middle latitudes originates in ______ clouds.

It takes the water content of about ______ cloud droplets to form a single raindrop.

a warm cloud is composed of

When water or ice particles vaporize before reaching the group, appearing as dark curtains or streaks, this is known as ______.

a cold cloud is composed of

The Bergeron-Findeisen precipitation process takes place within ______ clouds.

In cold clouds, a vapor pressure that is ______ for water droplets is ______ for ice crystals.

The type of frozen precipitation sometimes produced by a summer thunderstorm is

Rain that has a pH ______ 5.6 is considered to be acid rain.

Weather radar continually emits pulses of _________.

Weather radar gathers information about precipitation in clouds by measuring the

Operating in the Doppler mode, weather radar detects particles moving __________ the radar beam.

weather radar displays show the

______ uses multiple beams sent out simultaneously, providing a faster, more detailed picture of the atmosphere.

Which type of rain gauge performs better at subfreezing air temperatures?