Question 1

Isobars are lines on a weather map representing what?

Accepted Answer

A) lines of equal air pressure 
B) lines of equivalent air speed 
C) lines of equal elevation for the tropopause 
D) lines showing equal density of bars 
A) lines of equal air pressure 
B) lines of equivalent air speed 
C) lines of equal elevation for the tropopause 
D) lines showing equal density of bars A

Question 2

The Coriolis effect influences ________.

Accepted Answer

A) only wind speed 
B) only wind direction 
C) both wind speed and wind direction 
D) neither wind speed nor wind direction 
A) only wind speed 
B) only wind direction 
C) both wind speed and wind direction 
D) neither wind speed nor wind direction B

Question 3

You might wonder why a millibar isn't exactly 1/1000th of an atmosphere.The unit is actually related to the old CGS units because atmospheric pressure is close to this unit.In CGS units 1 bar = 1000 dynes/cm2.Pressure is often incorrectly reported as kg/cm2,which is neither a legitimate pressure unit nor a standard SI unit (pressure is force/unit area,and kg are a mass unit,and SI units never mix kg and cm).So let's straighten out your friends on these units.Standard air pressure in this incorrect unit is 1.034 kg/cm2.The weight of a kg at the earth's surface is 980,000 dynes.So what is standard air pressure in millibars?

Accepted Answer

A) 750 mb 
B) 890 mb 
C) 1013 mb 
D) 1143 mb 
A) 750 mb 
B) 890 mb 
C) 1013 mb 
D) 1143 mb C

Question 4

Horizontal movement of air is called wind.

Accepted Answer

A) True 
 B)False

Question 5

An isobar is a line connecting places of equal humidity.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following devices measures both wind direction and speed?

Accepted Answer

A) anemometer 
B) wind vane 
C) wind sock 
D) None of these can measure both wind speed and direction. 
A) anemometer 
B) wind vane 
C) wind sock 
D) None of these can measure both wind speed and direction.

Question 7

When winds blow parallel to the isobars,which is usually the case for winds aloft,they are called ________ winds.

Accepted Answer

The answer of When winds blow parallel to the isobars,which...

Question 8

equatorial low trade winds polar front subtropical high

Accepted Answer

The answer of equatorial low trade winds polar front subtropical...

Question 9

When someone says we have a southeast wind,what direction would you look to face into the wind?

Accepted Answer

A) southeast 
B) northwest 
C) east 
D) west 
A) southeast 
B) northwest 
C) east 
D) west

Question 10

Of the various elements of weather,changes in air pressure are probably the most obvious.

Accepted Answer

A) True 
 B)False

Question 11

The force that generates wind is known as the ________ force.

Accepted Answer

The answer of The force that generates wind is known...

Question 12

In the Northern Hemisphere,the winds associated with a low pressure system (cyclone)blow ________.

Accepted Answer

A) clockwise and toward the center 
B) counterclockwise and toward the center 
C) clockwise and outward from the center 
D) counterclockwise and outward from the center 
A) clockwise and toward the center 
B) counterclockwise and toward the center 
C) clockwise and outward from the center 
D) counterclockwise and outward from the center

Question 13

Upper air winds are generally faster than the surface winds directly below.

Accepted Answer

A) True 
 B)False

Question 14

The region where the trade winds meet is also called the doldrums.

Accepted Answer

A) True 
 B)False

Question 15

A Santa Ana (or Chinook or Foehn)wind is a ________.

Accepted Answer

A) wind associated with a blizzard 
B) cold,damp wind blowing off a snow field 
C) wind that is common to the world's deserts 
D) very dry,warm wind flowing down a mountain slope 
A) wind associated with a blizzard 
B) cold,damp wind blowing off a snow field 
C) wind that is common to the world's deserts 
D) very dry,warm wind flowing down a mountain slope

Question 16

Standard sea level air pressure is 1013 millibars.

Accepted Answer

A) True 
 B)False

Question 17

Low air pressure systems are usually associated with ________.

Accepted Answer

A) diverging surface winds and low pressure aloft 
B) descending air and low pressure aloft 
C) converging air,precipitation,and high pressure aloft 
D) clear weather 
A) diverging surface winds and low pressure aloft 
B) descending air and low pressure aloft 
C) converging air,precipitation,and high pressure aloft 
D) clear weather

Question 18

Most deserts are associated with the subtropical high.

Accepted Answer

A) True 
 B)False

Question 19

Why do storm systems move from west to east in mid latitudes of the Northern Hemisphere?

Accepted Answer

A) The storms are steered by approximately west to east winds aloft that are approximately geostrophic winds produced by Coriolis forces. 
B) The prevailing wind is from the west. 
C) The prevailing wind is from the east,and the storm systems move toward the surface flow. 
D) The continents break up air flow that would normally be south to north and the Coriolis force turns the storms to the right,or toward the east. 
A) The storms are steered by approximately west to east winds aloft that are approximately geostrophic winds produced by Coriolis forces. 
B) The prevailing wind is from the west. 
C) The prevailing wind is from the east,and the storm systems move toward the surface flow. 
D) The continents break up air flow that would normally be south to north and the Coriolis force turns the storms to the right,or toward the east.

Question 20

Another name for the area of equatorial low pressure is the ________.

Accepted Answer

A) subpolar easterlies 
B) westerlies 
C) doldrums 
D) horse latitudes 
A) subpolar easterlies 
B) westerlies 
C) doldrums 
D) horse latitudes

Exam 18: Air Pressure and Wind

Isobars are lines on a weather map representing what?

The Coriolis effect influences ________.

Horizontal movement of air is called wind.

An isobar is a line connecting places of equal humidity.

Which of the following devices measures both wind direction and speed?

When winds blow parallel to the isobars,which is usually the case for winds aloft,they are called ________ winds.

equatorial low trade winds polar front subtropical high

When someone says we have a southeast wind,what direction would you look to face into the wind?

Of the various elements of weather,changes in air pressure are probably the most obvious.

The force that generates wind is known as the ________ force.

In the Northern Hemisphere,the winds associated with a low pressure system (cyclone)blow ________.

Upper air winds are generally faster than the surface winds directly below.

The region where the trade winds meet is also called the doldrums.

A Santa Ana (or Chinook or Foehn)wind is a ________.

Standard sea level air pressure is 1013 millibars.

Low air pressure systems are usually associated with ________.

Most deserts are associated with the subtropical high.

Why do storm systems move from west to east in mid latitudes of the Northern Hemisphere?

Another name for the area of equatorial low pressure is the ________.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Weathering, soil, and Mass Wasting

Running Water and Groundwater

Glaciers, deserts, and Wind

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Geologic Time

Earths Evolution Through Geologic Time

The Ocean Floor

Ocean Water and Ocean Life

The Dynamic Ocean

The Atmosphere: Composition,structure,and Temperature

Moisture, clouds, and Precipitation

Weather Patterns and Severe Weather

World Climates and Global Climate Change

Origin of Modern Astronomy

Touring Our Solar System

Light,astronomical Observations,and the Sun

Beyond Our Solar System

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