Question 1

A rapid change in pressure over a relatively short distance is called a ____ pressure gradient.​

Accepted Answer

A)  sudden
B)  rapid
C)  ​weak
D)  ​gentle
E)  ​steepF) C) and E)
G) A) and B)

Question 2

Explain the differences between geostrophic and gradient winds.

Accepted Answer

In situations where wind speed increases...

Question 3

The pressure announced on last night's television weather broadcast was 29.92.Explain how this was measured and give the units.Would this be considered an unusually large or low pressure value?

Accepted Answer

"29.92" stands for 29.92 inches of mercury (in.Hg),which is equivalent to 1013.25 mb and 76 cm.It's the pressure found at sea level,which is also called standard atmospheric pressure.
The barometer used to obtain this pressure reading was a mercury barometer.Evangelista Torricelli,a student of Galileo,invented the mercury barometer in 1643.His barometer,similar to those in use today,consisted of a long glass tube open at one end and closed at the other.Removing air from the tube and covering the open end,Torricelli immersed the lower portion into a dish of mercury.He removed the cover,and the mercury rose up the tube to nearly 76 cm (or about 30 in.)above the level in the dish.Torricelli correctly concluded that the column of mercury in the tube was balancing the weight of the air above the dish,and hence its height was a measure of atmospheric pressure.Mercury barometers are still used today in many settings,although they are no longer manufactured or sold in Europe because of restrictions on the use of mercury.

Question 4

On an upper-level chart the wind tends to be​

Accepted Answer

A)  at right angles to the isobars or contour lines.
B)  parallel to the isobars or contours.
C)  ​at an angle between 10 and 30 to the contours and towards lower pressure.
D)  ​at constant speed.
E)  ​at an angle between 10 and 30 to the contours and towards higher pressure.F) D) and E)
G) C) and D)

Question 5

In middle latitudes,when an area of high pressure approaches a city,surface pressure usually ____.When it moves away,pressure usually ____.

Accepted Answer

A)  remains the same;remains the same
B)  remains the same;falls
C)  ​remains the same;rises
D)  ​falls;rises
E)  ​rises;fallsF) B) and D)
G) C) and D)

Question 6

The altimeter and barograph are two types of aneroid barometers.

Accepted Answer

A) True 
 B)False

Question 7

On an upper-level chart cold air aloft is generally associated with ____________________ pressure.

Accepted Answer

The answer of On an upper-level chart cold air aloft...

Question 8

In an aneroid barometer,a general rule is that the higher the reading,the more likely ____ weather will occur,and the lower the reading,the better the chances are for ____ weather.​

Accepted Answer

A)  clear;inclement
B)  inclement;clear
C)  ​cold;warm
D)  ​windy;still
E)  ​snowy;rainyF) A) and C)
G) C) and D)

Question 9

The ____ force is an apparent force created by Earth's rotation.​

Accepted Answer

A)  pressure gradient
B)  Coriolis
C)  ​centripetal
D)  ​gravitational
E)  ​frictionalF) A) and D)
G) None of the above B

Question 10

Another term for isobaric chart is ____________________.

Accepted Answer

constant p...

Question 11

Upper-level winds in the middle latitudes of both hemispheres generally blow from ____.​

Accepted Answer

A)  the north
B)  the east
C)  ​the south
D)  ​the west
E)  ​changing directionsF) B) and E)
G) A) and B)

Question 12

On an upper-level 500-mb map the winds tend to parallel the contour lines in a wavy west-to-east direction,and the contour lines tend to decrease in height from south to north.Explain.

Accepted Answer

The combination of the pressure gradient force and Coriolis force cause winds to flow in a west to east pattern.The decrease in contour line height from south to north is the result of air at this level being warmer in the south and colder in the north.On maps,where horizontal temperature contrasts are large there is also a large height gradient-the contour lines are close together and the winds are strong.Where the horizontal temperature contrasts are small,there is a small height gradient-the contour lines are spaced farther apart and the winds are weaker.In general,on maps such as this we find stronger north-to-south temperature contrasts in winter than in summer,which is why the winds aloft are usually stronger in winter.

Question 13

How does an aneroid barometer differ from a mercury barometer?

Accepted Answer

An aneroid barometer houses a small,flex...

Question 14

The unit of pressure designated by the International System (SI) of measurement is the ____.​

Accepted Answer

A)  atmospheric pressure
B)  millibar
C)  ​bar
D)  ​torr
E)  ​pascalF) A) and E)
G) A) and B)

Question 15

A pascal (Pa) is the force of ____ acting on a surface area of ____.​

Accepted Answer

A)  1 Newton;1 square meter
B)  100 Newton;1 square meter
C)  ​1 Newton;1 square foot
D)  ​1 Newton;1 square inch
E)  ​10 Newton;1 square footF) C) and D)
G) A) and E)

Question 16

Why do daily pressure fluctuations occur,and where on Earth can you find significant daily fluctuations?

Accepted Answer

We might expect to see the surface press...

Question 17

The angle at which surface winds cross isobars depends upon surface friction,wind speed,and the height above the surface.

Accepted Answer

A) True 
 B)False

Question 18

A geostrophic wind is a wind that results from a balance between the ____ force and the ____ force.​

Accepted Answer

A)  pressure gradient;gravitational
B)  pressure gradient;frictional
C)  ​Coriolis;gravitational
D)  ​Coriolis;frictional
E)  ​Coriolis;pressure gradientF) C) and E)
G) B) and C)

Question 19

Which of the following instruments measures pressure?​

Accepted Answer

A)  barometer
B)  thermometer
C)  ​radiometer
D)  ​hygrometer
E)  ​densitometerF) All of the above
G) C) and E)

Question 20

The surface pressures at the bases of warm and cold columns of air are equal.Air pressure in the warm column of air will ____ with increasing height ____ in the cold column.​

Accepted Answer

A)  decrease;at the same rate as
B)  decrease;more slowly than
C)  ​increase;more rapidly than
D)  ​increase;more slowly than
E)  ​increase;at the same rate asF) C) and E)
G) C) and D)

Exam 8: Air Pressure and Winds

A rapid change in pressure over a relatively short distance is called a ____ pressure gradient.

Correct Answer
verified

Explain the differences between geostrophic and gradient winds.

Correct Answer
verified
In situations where wind speed increases...
View Answer

The pressure announced on last night's television weather broadcast was 29.92.Explain how this was measured and give the units.Would this be considered an unusually large or low pressure value?

On an upper-level chart the wind tends to be

Correct Answer
verified

In middle latitudes,when an area of high pressure approaches a city,surface pressure usually .When it moves away,pressure usually .

Correct Answer
verified

The altimeter and barograph are two types of aneroid barometers.

Correct Answer
verified

On an upper-level chart cold air aloft is generally associated with ____________________ pressure.

Correct Answer
verified

In an aneroid barometer,a general rule is that the higher the reading,the more likely weather will occur,and the lower the reading,the better the chances are for weather.

Correct Answer
verified

The ____ force is an apparent force created by Earth's rotation.

Correct Answer
verified
B

Another term for isobaric chart is ____________________.

Correct Answer
verified
constant p...
View Answer

Upper-level winds in the middle latitudes of both hemispheres generally blow from ____.

Correct Answer
verified

On an upper-level 500-mb map the winds tend to parallel the contour lines in a wavy west-to-east direction,and the contour lines tend to decrease in height from south to north.Explain.

How does an aneroid barometer differ from a mercury barometer?

Correct Answer
verified
An aneroid barometer houses a small,flex...
View Answer

The unit of pressure designated by the International System (SI) of measurement is the ____.

Correct Answer
verified

A pascal (Pa) is the force of acting on a surface area of .

Correct Answer
verified

Why do daily pressure fluctuations occur,and where on Earth can you find significant daily fluctuations?

Correct Answer
verified
We might expect to see the surface press...
View Answer

The angle at which surface winds cross isobars depends upon surface friction,wind speed,and the height above the surface.

Correct Answer
verified

A geostrophic wind is a wind that results from a balance between the force and the force.

Correct Answer
verified

Which of the following instruments measures pressure?

Correct Answer
verified

The surface pressures at the bases of warm and cold columns of air are equal.Air pressure in the warm column of air will with increasing height in the cold column.

Correct Answer
verified

Exam 8: Air Pressure and Winds

A rapid change in pressure over a relatively short distance is called a ____ pressure gradient.​

Correct AnswerverifiedShow Answer

Explain the differences between geostrophic and gradient winds.

Correct AnswerverifiedIn situations where wind speed increases...View AnswerShow Answer

The pressure announced on last night's television weather broadcast was 29.92.Explain how this was measured and give the units.Would this be considered an unusually large or low pressure value?

On an upper-level chart the wind tends to be​

Correct AnswerverifiedShow Answer

In middle latitudes,when an area of high pressure approaches a city,surface pressure usually ____.When it moves away,pressure usually ____.

Correct AnswerverifiedShow Answer

The altimeter and barograph are two types of aneroid barometers.

Correct AnswerverifiedShow Answer

On an upper-level chart cold air aloft is generally associated with ____________________ pressure.

Correct AnswerverifiedShow Answer

In an aneroid barometer,a general rule is that the higher the reading,the more likely ____ weather will occur,and the lower the reading,the better the chances are for ____ weather.​

Correct AnswerverifiedShow Answer

The ____ force is an apparent force created by Earth's rotation.​

Correct AnswerverifiedB

Another term for isobaric chart is ____________________.

Correct Answerverifiedconstant p...View AnswerShow Answer

Upper-level winds in the middle latitudes of both hemispheres generally blow from ____.​

Correct AnswerverifiedShow Answer

On an upper-level 500-mb map the winds tend to parallel the contour lines in a wavy west-to-east direction,and the contour lines tend to decrease in height from south to north.Explain.

How does an aneroid barometer differ from a mercury barometer?

Correct AnswerverifiedAn aneroid barometer houses a small,flex...View AnswerShow Answer

The unit of pressure designated by the International System (SI) of measurement is the ____.​

Correct AnswerverifiedShow Answer

A pascal (Pa) is the force of ____ acting on a surface area of ____.​

Correct AnswerverifiedShow Answer

Why do daily pressure fluctuations occur,and where on Earth can you find significant daily fluctuations?

Correct AnswerverifiedWe might expect to see the surface press...View AnswerShow Answer

The angle at which surface winds cross isobars depends upon surface friction,wind speed,and the height above the surface.

Correct AnswerverifiedShow Answer

A geostrophic wind is a wind that results from a balance between the ____ force and the ____ force.​

Correct AnswerverifiedShow Answer

Which of the following instruments measures pressure?​

Correct AnswerverifiedShow Answer

The surface pressures at the bases of warm and cold columns of air are equal.Air pressure in the warm column of air will ____ with increasing height ____ in the cold column.​

Correct AnswerverifiedShow Answer

A rapid change in pressure over a relatively short distance is called a ____ pressure gradient.

Correct Answer
verified

Correct Answer
verified
In situations where wind speed increases...
View Answer

On an upper-level chart the wind tends to be

Correct Answer
verified

In middle latitudes,when an area of high pressure approaches a city,surface pressure usually .When it moves away,pressure usually .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In an aneroid barometer,a general rule is that the higher the reading,the more likely weather will occur,and the lower the reading,the better the chances are for weather.

Correct Answer
verified

The ____ force is an apparent force created by Earth's rotation.

Correct Answer
verified
B

Correct Answer
verified
constant p...
View Answer

Upper-level winds in the middle latitudes of both hemispheres generally blow from ____.

Correct Answer
verified

Correct Answer
verified
An aneroid barometer houses a small,flex...
View Answer

The unit of pressure designated by the International System (SI) of measurement is the ____.

Correct Answer
verified

A pascal (Pa) is the force of acting on a surface area of .

Correct Answer
verified

Correct Answer
verified
We might expect to see the surface press...
View Answer

Correct Answer
verified

A geostrophic wind is a wind that results from a balance between the force and the force.

Correct Answer
verified

Which of the following instruments measures pressure?

Correct Answer
verified

The surface pressures at the bases of warm and cold columns of air are equal.Air pressure in the warm column of air will with increasing height in the cold column.

Correct Answer
verified