Question 1

​An important factor in the production of rain by the collision-coalescence process is the number of ice crystals in the cloud.

Accepted Answer

A) True 
 B)False

Question 2

Given that precipitation can be accurately measured at surface weather stations, explain why it is desirable to measure rainfall from space.

Accepted Answer

The benefits of measuring precipitation

Question 3

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 produce this situation?​

Accepted Answer

A)  ​snow 
B)  ​hail 
C)  ​freezing rain 
D)  ​sleet 
E)  ​rain 
A)  ​snow 
B)  ​hail 
C)  ​freezing rain 
D)  ​sleet 
E)  ​rain

Question 4

Large, heavy snowflakes are associated with moist air and temperatures well below freezing.

Accepted Answer

A) True 
 B)False

Question 5

​Contact freezing is

Accepted Answer

A)  ​the freezing of supercooled droplets by contact with a nucleus. 
B)  ​the sticking together of ice crystals to make a snowflake. 
C)  ​the joining of many nuclei to form an ice nucleus. 
D)  ​the freezing of supercooled droplets when they come into contact with a supercooled surface. 
E)  ​the sticking together of any type of nucleus. 
A)  ​the freezing of supercooled droplets by contact with a nucleus. 
B)  ​the sticking together of ice crystals to make a snowflake. 
C)  ​the joining of many nuclei to form an ice nucleus. 
D)  ​the freezing of supercooled droplets when they come into contact with a supercooled surface. 
E)  ​the sticking together of any type of nucleus.

Question 6

Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be ____________________ freezing, whereas surface temperatures are typically well ____________________ freezing during hailstorms.​

Accepted Answer

The answer of Atmospheric conditions that produce sleet differ from...

Question 7

Satellites measure rainfall from space using which instrument?​

Accepted Answer

A)  ​radar 
B)  ​tipping-bucket rain gauge 
C)  ​ceiliometer 
D)  ​weighing-type rain gauge 
E)  ​standard rain gauge 
A)  ​radar 
B)  ​tipping-bucket rain gauge 
C)  ​ceiliometer 
D)  ​weighing-type rain gauge 
E)  ​standard rain gauge

Question 8

In dry powdery snow, the water equivalent ratio may be as high as​

Accepted Answer

A)  ​15:1. 
B)  ​20:1. 
C)  ​25:1. 
D)  ​30:1. 
E)  ​35:1. 
A)  ​15:1. 
B)  ​20:1. 
C)  ​25:1. 
D)  ​30:1. 
E)  ​35:1.

Question 9

Explain why it is much more difficult to measure snowfall amounts than rainfall amounts, and describe the instruments commonly used to measure snowfall amounts.

Accepted Answer

Snow is challenging to measure, since ac

Question 10

List the advantages and disadvantages of heavy snowfall.

Accepted Answer

Advantages: A blanket of snow is a good

Question 11

When the temperature in a cloud is -30°C, larger cloud droplets are more likely to freeze than smaller cloud droplets.

Accepted Answer

A) True 
 B)False

Question 12

Explain how clouds can be seeded naturally.

Accepted Answer

Under certain conditions, clouds may be

Question 13

Fallstreaks most often form with​

Accepted Answer

A)  ​nimbostratus clouds. 
B)  ​cumulonimbus clouds. 
C)  ​stratus clouds. 
D)  ​altostratus clouds. 
E)  ​cirrus clouds. 
A)  ​nimbostratus clouds. 
B)  ​cumulonimbus clouds. 
C)  ​stratus clouds. 
D)  ​altostratus clouds. 
E)  ​cirrus clouds.

Question 14

Large cloud droplets fall faster than small cloud droplets because gravity acts more strongly on larger droplets.

Accepted Answer

A) True 
 B)False

Question 15

In various parts of the world where the air is typically moist but rainfall is scarce, _____________________ are used to gather fresh water.

Accepted Answer

fog collec

Question 16

Raindrops that reach Earth's surface are seldom larger than​

Accepted Answer

A)  ​2 mm 
B)  ​3 mm 
C)  ​5 mm 
D)  ​8 mm 
E)  ​10 mm 
A)  ​2 mm 
B)  ​3 mm 
C)  ​5 mm 
D)  ​8 mm 
E)  ​10 mm

Question 17

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

Accepted Answer

An ordinary cloud droplet is extremely s

Question 18

Which cloud type below will only produce precipitation by the collision-coalescence process?​

Accepted Answer

A)  ​a thick, cold nimbostratus cloud 
B)  ​a thick, warm cumulus cloud 
C)  ​a thick, cold cumulus cloud 
D)  ​a thick, supercooled cumulonimbus cloud with abundant nuclei 
E)  ​a supercooled cumulus congestus cloud 
A)  ​a thick, cold nimbostratus cloud 
B)  ​a thick, warm cumulus cloud 
C)  ​a thick, cold cumulus cloud 
D)  ​a thick, supercooled cumulonimbus cloud with abundant nuclei 
E)  ​a supercooled cumulus congestus cloud

Question 19

The idea in cloud seeding is to first find clouds that have too low a ratio of ice crystals to droplets and then to add enough artificial ice nuclei so that the ratio of crystals to droplets is about ____.​

Accepted Answer

A)  ​1:100 
B)  ​1:1,000 
C)  ​1:10,000 
D)  ​1:100,000 
E)  ​1:1,000,000 
A)  ​1:100 
B)  ​1:1,000 
C)  ​1:10,000 
D)  ​1:100,000 
E)  ​1:1,000,000

Question 20

Condensation onto hygroscopic nuclei is possible at relative humidities less than 100 percent due to the​

Accepted Answer

A)  ​curvature effect. 
B)  ​electrical charge on these nuclei. 
C)  ​solute effect. 
D)  ​crystalline structure of these nuclei. 
E)  ​size of the nuclei. 
A)  ​curvature effect. 
B)  ​electrical charge on these nuclei. 
C)  ​solute effect. 
D)  ​crystalline structure of these nuclei. 
E)  ​size of the nuclei.

An important factor in the production of rain by the collision-coalescence process is the number of ice crystals in the cloud.

Given that precipitation can be accurately measured at surface weather stations, explain why it is desirable to measure rainfall from space.

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 produce this situation?

Large, heavy snowflakes are associated with moist air and temperatures well below freezing.

Contact freezing is

Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be freezing, whereas surface temperatures are typically well freezing during hailstorms.

Satellites measure rainfall from space using which instrument?

In dry powdery snow, the water equivalent ratio may be as high as

Explain why it is much more difficult to measure snowfall amounts than rainfall amounts, and describe the instruments commonly used to measure snowfall amounts.

List the advantages and disadvantages of heavy snowfall.

When the temperature in a cloud is -30°C, larger cloud droplets are more likely to freeze than smaller cloud droplets.

Explain how clouds can be seeded naturally.

Fallstreaks most often form with

Large cloud droplets fall faster than small cloud droplets because gravity acts more strongly on larger droplets.

In various parts of the world where the air is typically moist but rainfall is scarce, _____________________ are used to gather fresh water.

Raindrops that reach Earth's surface are seldom larger than

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

Which cloud type below will only produce precipitation by the collision-coalescence process?

The idea in cloud seeding is to first find clouds that have too low a ratio of ice crystals to droplets and then to add enough artificial ice nuclei so that the ratio of crystals to droplets is about ____.

Condensation onto hygroscopic nuclei is possible at relative humidities less than 100 percent due to the

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Air Masses and Fronts

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light - Color and Atmospheric Optics

Filters

Exam 7: Precipitation

​An important factor in the production of rain by the collision-coalescence process is the number of ice crystals in the cloud.

Given that precipitation can be accurately measured at surface weather stations, explain why it is desirable to measure rainfall from space.

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 produce this situation?​

Large, heavy snowflakes are associated with moist air and temperatures well below freezing.

​Contact freezing is

Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be ____________________ freezing, whereas surface temperatures are typically well ____________________ freezing during hailstorms.​

Satellites measure rainfall from space using which instrument?​

In dry powdery snow, the water equivalent ratio may be as high as​

Explain why it is much more difficult to measure snowfall amounts than rainfall amounts, and describe the instruments commonly used to measure snowfall amounts.

List the advantages and disadvantages of heavy snowfall.

When the temperature in a cloud is -30°C, larger cloud droplets are more likely to freeze than smaller cloud droplets.

Explain how clouds can be seeded naturally.

Fallstreaks most often form with​

Large cloud droplets fall faster than small cloud droplets because gravity acts more strongly on larger droplets.

In various parts of the world where the air is typically moist but rainfall is scarce, _____________________ are used to gather fresh water.

Raindrops that reach Earth's surface are seldom larger than​

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

Which cloud type below will only produce precipitation by the collision-coalescence process?​

The idea in cloud seeding is to first find clouds that have too low a ratio of ice crystals to droplets and then to add enough artificial ice nuclei so that the ratio of crystals to droplets is about ____.​

Condensation onto hygroscopic nuclei is possible at relative humidities less than 100 percent due to the​

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Air Masses and Fronts

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light - Color and Atmospheric Optics

Filters

An important factor in the production of rain by the collision-coalescence process is the number of ice crystals in the cloud.

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 produce this situation?

Contact freezing is

Atmospheric conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be freezing, whereas surface temperatures are typically well freezing during hailstorms.

Satellites measure rainfall from space using which instrument?

In dry powdery snow, the water equivalent ratio may be as high as

Fallstreaks most often form with

Raindrops that reach Earth's surface are seldom larger than

Which cloud type below will only produce precipitation by the collision-coalescence process?

The idea in cloud seeding is to first find clouds that have too low a ratio of ice crystals to droplets and then to add enough artificial ice nuclei so that the ratio of crystals to droplets is about ____.

Condensation onto hygroscopic nuclei is possible at relative humidities less than 100 percent due to the