Question 1

What are the two main substances used in cloud seeding?​

Accepted Answer

A) lead iodide and dry ice 
B) silver iodide and lead iodide 
C) ​ice crystals and flood powder 
D) ​dry ice and sea salt 
E) ​silver iodide and dry ice 
A) lead iodide and dry ice 
B) silver iodide and lead iodide 
C) ​ice crystals and flood powder 
D) ​dry ice and sea salt 
E) ​silver iodide and dry ice

Question 2

The region of a cloud where only ice particles exist is called​

Accepted Answer

A) iced. 
B) coated. 
C) ​graupled. 
D) ​nucleated. 
E) ​glaciated. 
A) iced. 
B) coated. 
C) ​graupled. 
D) ​nucleated. 
E) ​glaciated.

Question 3

A fluffy covering of snow protects sensitive plants and their root systems from damaging low temperatures.​

Accepted Answer

A) True 
 B)False

Question 4

With a Doppler radar smaller targets require detection by longer wavelengths.

Accepted Answer

A) True 
 B)False

Question 5

Modern satellites are equipped with very sensitive radars that are able to peer into a cloud and provide a vertical view of its tiny cloud droplets and ice particles,as well as precipitation.​

Accepted Answer

A) True 
 B)False

Question 6

List the advantages and disadvantages of heavy snowfall.

Accepted Answer

Advantages: A blanket of snow is a good

Question 7

How does the ice-crystal (Bergeron)process produce precipitation? What is the main premise describing this process?

Accepted Answer

The main premise is that the saturation

Question 8

During the ice crystal process of rain formation,​

Accepted Answer

A) only ice crystals are present in a cloud. 
B) ice crystals grow larger at the expense of the surrounding liquid cloud droplets. 
C) ​the temperature in the cloud must be -40°C (-40°F)or below. 
D) ​the cloud must be a cumuliform cloud. 
E) ​the surface temperature must be below freezing. 
A) only ice crystals are present in a cloud. 
B) ice crystals grow larger at the expense of the surrounding liquid cloud droplets. 
C) ​the temperature in the cloud must be -40°C (-40°F)or below. 
D) ​the cloud must be a cumuliform cloud. 
E) ​the surface temperature must be below freezing.

Question 9

The growth of a precipitation particle by the collision of an ice crystal (or snowflake)with a supercooled liquid droplet is called​

Accepted Answer

A) accretion. 
B) spontaneous nucleation. 
C) ​condensation. 
D) ​deposition. 
E) ​collision. 
A) accretion. 
B) spontaneous nucleation. 
C) ​condensation. 
D) ​deposition. 
E) ​collision.

Question 10

Some of the first experiments in cloud seeding were conducted by Vincent Schaefer and Irving Langmuir during the late 1940s.To seed a cloud,they dropped crushed pellets of ____ from a plane.​

Accepted Answer

A) silver iodide 
B) silver iodine 
C) ​lead iodide 
D) ​cupric sulfide 
E) ​dry ice 
A) silver iodide 
B) silver iodine 
C) ​lead iodide 
D) ​cupric sulfide 
E) ​dry ice

Question 11

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 12

An instrument that can collect and measure rainfall is called a(n)____________________.​

Accepted Answer

The answer of An instrument that can collect and measure...

Question 13

Typical cloud droplets seldom reach the ground as rain because they ____________________ before reaching the ground.​

Accepted Answer

The answer of Typical cloud droplets seldom reach the ground...

Question 14

Which statement below best describes the curvature effect?​

Accepted Answer

A) large cloud droplets fall faster than small droplets. 
B) small droplets evaporate more quickly than large droplets. 
C) ​small droplets collide and coalesce more easily than larger droplets. 
D) ​it explains the six-sided shape of ice crystals. 
E) ​it explains the shape of rain drops. 
A) large cloud droplets fall faster than small droplets. 
B) small droplets evaporate more quickly than large droplets. 
C) ​small droplets collide and coalesce more easily than larger droplets. 
D) ​it explains the six-sided shape of ice crystals. 
E) ​it explains the shape of rain drops.

Question 15

How is precipitation measured using Doppler radar?

Accepted Answer

Every radar unit consists of a transmitt

Question 16

A supercooled cloud droplet is​

Accepted Answer

A) an ice crystal surrounded by air warmer than 0°C (32°F). 
B) a liquid droplet that is cooler than the air around it. 
C) ​a liquid droplets observed at temperatures below 0°C (32°F). 
D) ​a water droplet that has had all its latent heat removed. 
E) ​another term for ice crystal. 
A) an ice crystal surrounded by air warmer than 0°C (32°F). 
B) a liquid droplet that is cooler than the air around it. 
C) ​a liquid droplets observed at temperatures below 0°C (32°F). 
D) ​a water droplet that has had all its latent heat removed. 
E) ​another term for ice crystal.

Question 17

In a cloud composed of water droplets and ice crystals,the saturation vapor pressure is greater over the droplets than over the ice.

Accepted Answer

A) True 
 B)False

Question 18

A standard rain gauge consists of a funnel-shaped collector attached to a long measuring tube.The cross-sectional area of the collector is ____ times that of the tube.Hence,rain falling into the collector is amplified ____ in the tube,permitting measurements of great precision.​

Accepted Answer

A) 2;twofold 
B) 4;fourfold 
C) ​6;sixfold 
D) ​8;eightfold 
E) ​10;tenfold 
A) 2;twofold 
B) 4;fourfold 
C) ​6;sixfold 
D) ​8;eightfold 
E) ​10;tenfold

Question 19

Bacteria in decaying plant leaf material can act as ice nuclei.

Accepted Answer

A) True 
 B)False

Question 20

Suppose a thick nimbostratus cloud contains ice crystals and cloud droplets all about the same size.The precipitation process most important in producing rain from this cloud is called the ____________________ process.​

Accepted Answer

ice crysta

What are the two main substances used in cloud seeding?

The region of a cloud where only ice particles exist is called

A fluffy covering of snow protects sensitive plants and their root systems from damaging low temperatures.

With a Doppler radar smaller targets require detection by longer wavelengths.

Modern satellites are equipped with very sensitive radars that are able to peer into a cloud and provide a vertical view of its tiny cloud droplets and ice particles,as well as precipitation.

List the advantages and disadvantages of heavy snowfall.

How does the ice-crystal (Bergeron)process produce precipitation? What is the main premise describing this process?

During the ice crystal process of rain formation,

The growth of a precipitation particle by the collision of an ice crystal (or snowflake)with a supercooled liquid droplet is called

Some of the first experiments in cloud seeding were conducted by Vincent Schaefer and Irving Langmuir during the late 1940s.To seed a cloud,they dropped crushed pellets of ____ from a plane.

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

An instrument that can collect and measure rainfall is called a(n)____________________.

Typical cloud droplets seldom reach the ground as rain because they ____________________ before reaching the ground.

Which statement below best describes the curvature effect?

How is precipitation measured using Doppler radar?

A supercooled cloud droplet is

In a cloud composed of water droplets and ice crystals,the saturation vapor pressure is greater over the droplets than over the ice.

A standard rain gauge consists of a funnel-shaped collector attached to a long measuring tube.The cross-sectional area of the collector is times that of the tube.Hence,rain falling into the collector is amplified in the tube,permitting measurements of great precision.

Bacteria in decaying plant leaf material can act as ice nuclei.

Suppose a thick nimbostratus cloud contains ice crystals and cloud droplets all about the same size.The precipitation process most important in producing rain from this cloud is called the ____________________ process.

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

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Exam 7: Precipitation

What are the two main substances used in cloud seeding?​

The region of a cloud where only ice particles exist is called​

A fluffy covering of snow protects sensitive plants and their root systems from damaging low temperatures.​

With a Doppler radar smaller targets require detection by longer wavelengths.

Modern satellites are equipped with very sensitive radars that are able to peer into a cloud and provide a vertical view of its tiny cloud droplets and ice particles,as well as precipitation.​

List the advantages and disadvantages of heavy snowfall.

How does the ice-crystal (Bergeron)process produce precipitation? What is the main premise describing this process?

During the ice crystal process of rain formation,​

The growth of a precipitation particle by the collision of an ice crystal (or snowflake)with a supercooled liquid droplet is called​

Some of the first experiments in cloud seeding were conducted by Vincent Schaefer and Irving Langmuir during the late 1940s.To seed a cloud,they dropped crushed pellets of ____ from a plane.​

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

An instrument that can collect and measure rainfall is called a(n)____________________.​

Typical cloud droplets seldom reach the ground as rain because they ____________________ before reaching the ground.​

Which statement below best describes the curvature effect?​

How is precipitation measured using Doppler radar?

A supercooled cloud droplet is​

In a cloud composed of water droplets and ice crystals,the saturation vapor pressure is greater over the droplets than over the ice.

A standard rain gauge consists of a funnel-shaped collector attached to a long measuring tube.The cross-sectional area of the collector is ____ times that of the tube.Hence,rain falling into the collector is amplified ____ in the tube,permitting measurements of great precision.​

Bacteria in decaying plant leaf material can act as ice nuclei.

Suppose a thick nimbostratus cloud contains ice crystals and cloud droplets all about the same size.The precipitation process most important in producing rain from this cloud is called the ____________________ process.​

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

What are the two main substances used in cloud seeding?

The region of a cloud where only ice particles exist is called

A fluffy covering of snow protects sensitive plants and their root systems from damaging low temperatures.

Modern satellites are equipped with very sensitive radars that are able to peer into a cloud and provide a vertical view of its tiny cloud droplets and ice particles,as well as precipitation.

During the ice crystal process of rain formation,

The growth of a precipitation particle by the collision of an ice crystal (or snowflake)with a supercooled liquid droplet is called

Some of the first experiments in cloud seeding were conducted by Vincent Schaefer and Irving Langmuir during the late 1940s.To seed a cloud,they dropped crushed pellets of ____ from a plane.

An instrument that can collect and measure rainfall is called a(n)____________________.

Typical cloud droplets seldom reach the ground as rain because they ____________________ before reaching the ground.

Which statement below best describes the curvature effect?

A supercooled cloud droplet is

A standard rain gauge consists of a funnel-shaped collector attached to a long measuring tube.The cross-sectional area of the collector is times that of the tube.Hence,rain falling into the collector is amplified in the tube,permitting measurements of great precision.

Suppose a thick nimbostratus cloud contains ice crystals and cloud droplets all about the same size.The precipitation process most important in producing rain from this cloud is called the ____________________ process.