Question 1

The three mechanisms cause air to rise are orographic lifting, frontal wedging, and convection-convergence.

Accepted Answer

A) True 
 B)False  True

Question 2

What is an air mass and how big is it?

Accepted Answer

An air mass is a large body of air with approximately uniform temperature and humidity at any given altitude. Typically, an air mass is 1500 kilometers or more across and several kilometers thick.

Question 3

Hail falls only from cirrus clouds.

Accepted Answer

A) True 
 B)False  False

Question 4

The ____ is the temperature at which the relative humidity of air reaches 100%.

Accepted Answer

A)  saturation point 
B)  absolute humidity 
C)  dew point 
D)  partial humidity 
A)  saturation point 
B)  absolute humidity 
C)  dew point 
D)  partial humidity

Question 5

Sinking air exerts a downward force to form ____ regions.

Accepted Answer

A)  high-pressure 
B)  low-pressure 
C)  rainy 
D)  cyclonic 
A)  high-pressure 
B)  low-pressure 
C)  rainy 
D)  cyclonic

Question 6

____________________ form when warm air masses are trapped between two colder air masses.

Accepted Answer

The answer of ____________________ form when warm air masses are...

Question 7

The base of a(n) ____ cloud forms at the altitude at which the rising air cools to its dew point and condensation starts.

Accepted Answer

A)  altostratus 
B)  stratus 
C)  cirrus 
D)  cumulus 
A)  altostratus 
B)  stratus 
C)  cirrus 
D)  cumulus

Question 8

During adiabatic warming, the air warms up because ____.

Accepted Answer

A)  of the lapse rate 
B)  moisture is removed 
C)  heat is added 
D)  work is done 
A)  of the lapse rate 
B)  moisture is removed 
C)  heat is added 
D)  work is done

Question 9

____ is a condition in which water droplets in air do not freeze even when the air cools below the freezing point.

Accepted Answer

A)  Saturation 
B)  Supersaturation 
C)  Supercooling 
D)  Dew 
A)  Saturation 
B)  Supersaturation 
C)  Supercooling 
D)  Dew

Question 10

What causes a monsoon?

Accepted Answer

A)  drastic swings in temperature 
B)  low pressure systems on the oceans 
C)  high pressure systems on land 
D)  uneven heating of land and air 
A)  drastic swings in temperature 
B)  low pressure systems on the oceans 
C)  high pressure systems on land 
D)  uneven heating of land and air

Question 11

Points of equal air pressure connected by weather map lines are called ____________________.

Accepted Answer

The answer of Points of equal air pressure connected by...

Question 12

____________________ is the horizontal movement of air in response to differences in air pressure.

Accepted Answer

The answer of ____________________ is the horizontal movement of air...

Question 13

In today's tropical rainforests, local rainfall has decreased by as much as 50 % when the forests were cut and replaced by farmland or pasture.

Accepted Answer

A) True 
 B)False

Question 14

When air blows against a mountainside, it is forced to rise by a process called ____________________.

Accepted Answer

The answer of When air blows against a mountainside, it...

Question 15

Describe a cyclone and anticyclone-what is their spin pattern in the Northern and Southern Hemispheres?

Accepted Answer

Cyclone means a system of inwardly direc

Question 16

____ clouds are horizontally layered with a broad sheet-like appearance.

Accepted Answer

A)  Cirrus 
B)  Stratus 
C)  Cumulus 
D)  Cumulonimbus 
A)  Cirrus 
B)  Stratus 
C)  Cumulus 
D)  Cumulonimbus

Question 17

Rising air will cool adiabatically.

Accepted Answer

A) True 
 B)False

Question 18

Many scientists think that El Niño affects weather patterns for nearly three-quarters of Earth.

Accepted Answer

A) True 
 B)False

Question 19

Storms that form at an occluded front are commonly short-lived because the warm air mass is cut off from its supply of moisture evaporating from Earth's surface.

Accepted Answer

A) True 
 B)False

Question 20

Describe cirrus, stratus, and cumulus clouds in terms of their appearances.

Accepted Answer

Cirrus (Latin for "wisp of hair") clouds

Exam 19: Moisture, Clouds, and Weather

The three mechanisms cause air to rise are orographic lifting, frontal wedging, and convection-convergence.

What is an air mass and how big is it?

Hail falls only from cirrus clouds.

The ____ is the temperature at which the relative humidity of air reaches 100%.

Sinking air exerts a downward force to form ____ regions.

____________________ form when warm air masses are trapped between two colder air masses.

The base of a(n) ____ cloud forms at the altitude at which the rising air cools to its dew point and condensation starts.

During adiabatic warming, the air warms up because ____.

____ is a condition in which water droplets in air do not freeze even when the air cools below the freezing point.

What causes a monsoon?

Points of equal air pressure connected by weather map lines are called ____________________.

____________________ is the horizontal movement of air in response to differences in air pressure.

In today's tropical rainforests, local rainfall has decreased by as much as 50 % when the forests were cut and replaced by farmland or pasture.

When air blows against a mountainside, it is forced to rise by a process called ____________________.

Describe a cyclone and anticyclone-what is their spin pattern in the Northern and Southern Hemispheres?

____ clouds are horizontally layered with a broad sheet-like appearance.

Rising air will cool adiabatically.

Many scientists think that El Niño affects weather patterns for nearly three-quarters of Earth.

Storms that form at an occluded front are commonly short-lived because the warm air mass is cut off from its supply of moisture evaporating from Earth's surface.

Describe cirrus, stratus, and cumulus clouds in terms of their appearances.

Earth Systems

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Geologic Time: a Story in the Rocks

Geologic Resources

The Active Earth: Plate Tectonics

Earthquakes and the Earths Structure

Volcanoes and Plutons

Mountains

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Fresh Water: Streams, Lakes, Ground Water, and Wetlands

Water Resources

Glaciers and Ice Ages

Deserts and Wind

Ocean Basins

Oceans and Coastlines

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Energy Balance in the Atmosphere

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Climate Change

Motions in the Heavens

Planets and Their Moons

Stars, Space, and Galaxies

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