Chapter 3 - Atmospheric Pressure and Winds

Question 1

The weight of column of air at a given place and time is called ________

Answer 1

Pressure

Question 2

The international standard pressure unit is the ________

Answer 2

Pascal

Question 3

The mean atmospheric pressure at sea level is ________

Answer 3

1013.25 mb

Question 4

The columnar distribution of atmospheric pressure is known as

Answer 4

Vertical distribution of pressure gradient

Question 5

The normal rate of decrease in air pressure is ________

Answer 5

34 mb/ 300 m

Question 6

The distribution of atmospheric pressure over the globe is known as ________

Answer 6

Horizontal distribution of pressure

Question 7

The ratio between pressure difference and the actual horizontal distance between the two points.

Answer 7

Pressure gradient

Question 8

This belt is also known as the doldrums (the zone of calm) due to virtual absence of surface winds

Answer 8

Equatorial Low Pressure Belts

Question 9

a.k.a ITCZ

Answer 9

Equatorial low pressure belt

Question 10

the existence of these pressure belts is due to the fact that the rising air of the equatorial region is deflected towards pole due to the earth’s rotation

Answer 10

sub-tropical high pressure belts

Question 11

The worldwide system of winds is called

Answer 11

General Atmospheric Circulation

Question 12

Horizontal movement of air is in response to difference in pressure is termed as _______

Answer 12

Wind

Question 13

Describes the pattern of deflection taken by objects not firmly connected to the ground as it travel long distances around and above the earth

Answer 13

Coriolis Effect

Question 14

This cell creates some of the most important weather patterns on earth. As air rises and travels northward to the east, it eventually falls around 30. Where this air descends, it creates a ring of high atmospheric pressure

Answer 14

Hadley Cell

Question 15

In this cell, air converges at low altitude or ascends along the boundaries between polar air and the warm subtropical air

Answer 15

Ferrel Cell

Question 16

air sinks over the highest latitudes and flows out towards the lower latitudes at the surface

Answer 16

Polar Cells

Question 17

This type of wind blows from high pressure belts to low pressure belts in the same direction throughout the year

Answer 17

Planetary wins

Question 18

The winds that move poleward from subtropical high pressure in the northern hemisphere are deflected to the right and this blow from the south west.

Answer 18

Westerly

Question 19

The winds that blow from sub-tropical high pressure areas towards equatorial low pressure areas

Answer 19

Easterly

Question 20

This wind blow from polar regions towards sub-polar low pressure regions

Answer 20

Polar easterly

Question 21

The direction of these winds changes with the season

Answer 21

Periodic Winds

Question 22

A seasonal change in the direction of the prevailing, or strongest winds of a region

Answer 22

Monsoon Winds

Question 23

This type of winds is caused by the differences in air temperature. The temperature differences often develop through the sun

Answer 23

Local Winds

Question 24

Any wind characterized by intense heat and low relative humidity

Answer 24

Hot winds

Question 25

Wind which may blow very strongly over the northern plains of India and Pakistan in the months of May and June

Answer 25

Loo

Question 26

Warm, dry, downslope wind that descends on the eastern slope of the Rocky mountains. Strong westerlies aloft flow over a north-south trending mountain range,

Answer 26

Chinook

Question 27

Strong, dusty warm local wind which develops on the leeward side of the alps mountain ranges

Answer 27

Foehn

Question 28

The local winds that originate in the snow-capped mountains during winter and move down the slopes towards the valleys

Answer 28

Cold Winds

Question 29

The most common local winds and originate on the Alps and more over France towards the Mediterranean Sea through Rough Valley. They are very cold, dry and high velocity winds

Answer 29

Mistral

Question 30

A line connecting points that have equal values of pressure

Answer 30

Isobars

Question 31

Change in pressure is referred to as

Answer 31

Pressure Gradient