7

Question 1

T/F: generally, the concentration of condensation nuclei is greater over the ocean than over land

Answer 1

False

Question 2

T/F: in a cloud composed of water droplets and ice crystals, the saturation vapor pressure is less over the droplets than over the ice

Answer 2

False

Question 3

Found in certain regions of the cloud formation, a super cooled cloud droplet is ?

Answer 3

A liquid droplet observed at temperatures below 0 Celsius (32 f)

Question 4

For sub-freezing temperatures, the saturation vapor pressure just above a liquid water surface is _______ than the saturation vapor pressure above an ice surfaces

Answer 4

Greater >,

Question 5

T/F: an important factor in the production of rain by the collision-coalescence process is the number of ice crystals in the cloud

Answer 5

False

Question 6

There are many types of precipitation. Let’s think about the typical, however atypical raindrop is about _____ larger than a typical cloud droplet

Answer 6

One hundred times

Question 7

T/F: Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be below freezing, shear as surface temperatures are typically well above freezing during hail storms

Answer 7

True

Question 8

Precipitation with the greatest size (diameter) is a

Answer 8

Hailstone

Question 9

small raindrops fall ______ than large raindrops, and have a ______ terminal velocity than/as large raindrops

Answer 9

Slower, lesser

Question 10

What statement describes the curvature effect?

Answer 10

Reduced surface tension and the larger saturation vapor pressure required for the drop to remain in equilibrium with its surroundings

Question 11

There are many types of clouds, but not all produce precipitation. Which will only produce precipitation by the collision coalescence process?

Answer 11

A thick, warm, cumulus cloud

Question 12

In the winter, you read in the newspaper that a large section of the Midwest is without power due to downed power lines. Which form of precipitation would most likely cause this situation?

Answer 12

Freezing rain

Question 13

Rain that falls form a cloud but evaporates before reaching the ground us referred to as?

Answer 13

‘Virga

Question 14

Condensation onto hydroscopic nuclei is possible at relative humidity less than 100 percent due to the _______.

Answer 14

Solute effect

Question 15

T/F: Large, heavy snowflakes are associated with moist air and temperatures well below freezing

Answer 15

False

Question 16

T/F: if a city receives 24 inches of snow, it is the equivalent to 18 inches of rain

Answer 16

False

Question 17

T/F: typical cloud droplets seldom reach the ground as rain because they evaporate before reaching the ground/

Answer 17

True

Question 18

Which of the following might be mistaken for hail because of its appearance and origin?

Answer 18

Grauple (?)

Question 19

The speed of falling cloud droplets increases until the air resistance ________

Answer 19

Equals the pull of gravity

Question 20

T/F: In a cloud over land, where the air temperature is -10 degrees Celsius, we would find many more cloud droplets than ice crystals.

Answer 20

True

Question 21

Updrafts are responsible for the production of hail, while sleet is produced from a different process. Raindrops production can be complex, particularly with the collision-coalescence process if you observe large raindrops hitting the ground, you could probably say that the cloud over head was _____ and has _____ updrafts

Answer 21

Thick, strong

Question 22

While the diameter of raindrops can vary widely most reach earths surface are seldom larger than ____ mm in diameter

Answer 22

5mm in diameter

Question 23

Which below best describes the solute effect?

Answer 23

The water droplets dissolve hygroscopic nuclei condensation can occur at relative humidity less that 100%

Question 24

Precipitation with the greatest size (diameter) is a ?

Answer 24

Hailstone

Question 25

T/F: Heavy showers usually fall from cumulus clouds, whereas steady precipitation normally falls from stratus clouds.

Answer 25

True

Question 26

Clouds are complex and can have different temperature zones. The region of a cloud where only ice particles exist is called :

Answer 26

Glaciated

Question 27

The growth of precipitation particles by the collision of an ice crystal (or snowflake) with a super cooled liquid droplet is called?

Answer 27

Accretion

Question 28

What is the main difference between a cloud drop and a raindrop?

Answer 28

The size

Question 29

T/F: Generally the smaller the pure water droplet, the lower the temperature at which it will freeze

Answer 29

True