10

Question 1

T/F: At any given time, only one jet stream, which is fast flowing, narrow, meandering current can be found in the atmosphere, Jet streams are tracked by meteorologists because they always have a tampering effect on the intensity of winds aloft

Answer 1

False

Question 2

In the northern hemisphere, air found to be north of the polar fronts is _____ whereas air farther south is ______.

Answer 2

Cold, warm

Question 3

T/F: most of the United States is located within the prevailing easternlies wind belt

Answer 3

False

Question 4

T/F: off the west coast of the USA, the pacific high is a major semipermanent subtropical high that influences weather patterns in North America.

Answer 4

True

Question 5

If earths surface was homogeneous (either all land or all water) then…..

Answer 5

Then the semipermanent highs and lows would disappear altogether

Question 6

T/F: the polar front jet stream can affect. Weather as far as Florida and Mexico

Answer 6

True

Question 7

T/F: the average winds aloft are the strongest in winter

Answer 7

True?

Question 8

The jet stream flows ______________.

Answer 8

In a wavy pattern from west to east

Question 9

T/F: the general circulation of the atmosphere represents the natural air low around the world and not just an average

Answer 9

False

Question 10

T/F: a jet stream transfers more heat across the globe when it is zonal

Answer 10

False

Question 11

There are annual patterns in the movement of jet streams meaning that the position of the pacific high over the North Pacific high over the North Pacific Ocean shifts _______ (direction) in winter and _________ (direction) in summer

Answer 11

Southward, Northward

Question 12

in the northern hemisphere, the polar jet stream is strongest when ________________.

Answer 12

Air north of the polar front is much colder than air south of the polar front

Question 13

The subtropical jet stream is usually found between?

Answer 13

20 degrees to 30 degrees latitude, 200 mb level

Question 14

T/F: Areas over the ocean in weak pressure gradients lie in the center of a high producing weak winds, are commonly referred to as dog days latitude.

Answer 14

False

Question 15

Near the equator, the northeast trades converge with the southeast trades to form:

Answer 15

The inter tropical convergence zone

Question 16

If we look at atmospheric patterns and circulation the atmosphere, we can situate Chicago, Illinois, (latitude 42 degrees N) in the

Answer 16

Westerlies

Question 17

Which statement describes the polar front jet stream

Answer 17

It forms a boundary called the polar front

Question 18

The ultimate cause of jet streams is:

Answer 18

The energy imbalance between high and low latitudes

Question 19

Upwelling is ?

Answer 19

The rising of cold water from below

Question 20

As an air parcel aloft moves northward from the equator it moves closer to the Earths axis of rotation because of the conservation of momentum, the air parcels motion should _________________.

Answer 20

Increase in speed

Question 21

In the three-cell model, the wind belt obscured on the polarward side of the polar front is called the ________

Answer 21

Polar easterlies

Question 22

In the three-cell model the atmosphere, the circulation of wind in the atmosphere is driven by the rotation of the earth and the incoming energy from the sun. Each hemisphere has a cell: the Hadley cell, the Ferrell cell, the polar cell, but most motion occurs in the ________

Answer 22

Hadley cell

Question 23

The ____________ jet is known to show seasonal variations. In winter, the winds are stronger, and the jet moves farther south as the leading edge of the cold air can be extended into subtropical regions, as far south as Florida and Mexico. In summer, the jet is weaker and is usually found over more northernly latitudes.

Answer 23

Polar-Front

Question 24

On a weather map of the northern hemisphere, one would observe the westerlies __________________.

Answer 24

Between the sub polar lows and the subtropical highs

Question 25

In terms of the three-cell circulation model, the driest regions of earth should be near

Answer 25

30 degrees latitude and the polar regions

Question 26

T/F: an increase in either mass or velocity (or both) produces a decrease in momentum

Answer 26

False

Question 27

Because of the larger frictional drag in water, ocean currents move _____________ the prevailing winds above

Answer 27

More slowly than

Question 28

T/F: The polar frontal boundary separating cold polar air to the north from warm subtropical air to the south, the greatest contrast in air temperature occurs along the frontal zone

Answer 28

True

Question 29

Both the polar frontal jet stream and the subtropical jet stream are found in which level of the atmosphere?

Answer 29

The tropopause

Question 30

T/F: in the general circulation of the atmosphere, one would find the region called the doldrums near the equator

Answer 30

True

Question 31

T/F: the polar front jet stream is stronger in winter than in the summer

Answer 31

True

Question 32

According to the three-cell general circulation model at the equator, we would not expect to find ___________.

Answer 32

A ridge of high pressure

Question 33

The large convection cell that is driven by convective “hot” towers (a tropical cumulonimbus cloud that reaches out of the troposphere into the stratosphere, which can have rotating updrafts ) along the equator is the __________.

Answer 33

Hadley cell

Question 34

T/F: Not all jet streams form at the tropopause

Answer 34

True

Question 35

The north-south temperature contrast along the polar front is strongest in ______ and weakest in _______

Answer 35

Winter, summer

Question 36

The worlds deserts are found at 30 degrees latitude because of

Answer 36

The sinking air of the subtropical highs

Question 37

The inter tropical convergence zone (ITCZ) is often known of as the doldrums or the calms, and totally dreaded by pirates and merchant sailors alike in a region where __________.

Answer 37

Northeast trades converge within southeast trades

Question 38

T/F: the general circulation of the atmosphere represents the actual air flow around the world and not just an average

Answer 38

False

Question 39

T/F: the Hadley cell is referred to as a thermally direct cell because it is driven by energy from the sun as warm air rises and cold air sinks

Answer 39

True

Question 40

The majority of the United States lies within this belt

Answer 40

Westerlies