Quiz 3

Question 0

Lines connecting points of equal pressure are called what?

Answer 0

Isobars.

Question 1

The unit of pressure commonly found on a surface weather map is what?

Answer 1

Millibars.

Question 2

Pressure changes…

Answer 2

Less rapidly in the horizontal direction than in the vertical.

Question 3

The amount of pressure change that occurs over a given horizontal distance is called the what?

Answer 3

Pressure gradient

Question 4

What is the apparent force created by the earths rotation?

Answer 4

Coriolis force

Question 5

When the jet stream moves in a north to south direction, the wind pattern is called what?

Answer 5

Meridional

Question 6

The wind around a surface of low pressure center blows in which direction in the Southern Hemisphere, and in which direction in the northern hemisphere?

Answer 6

S. Hemisphere: clockwise

N. Hemisphere: counterclockwise

Question 7

The surface air around a strengthening low pressure area normally __________, while aloft, above the system, the air normally __________.

Answer 7

Converges, Diverges

Question 8

What is the ITCZ?

Answer 8

Inter tropical convergence zone.

Question 9

List the scales of atmospheric motion from smallest to largest.

Answer 9

1. Microscale
2. Mesoscale
3. Synoptic
4. Global

Question 10

A sea or land breeze is caused by what?

Answer 10

Temperature differences

Question 11

The name given to a wind system that seasonally changes direction is what?

Answer 11

Monsoon

Question 12

Chinook winds are _______ caused by ____________.

Answer 12

Warm, dry, downslope winds; compressional heating

Question 13

The jet stream winds are strongest in what season?

Answer 13

Winter

Question 14

Major ocean currents that flow parallel to the coast of the United States are what?

Answer 14

The California and Gulf Stream currents

Question 15

During a major El Niño event…

Answer 15

Extensive warming of the ocean water over the tropical pacific moves east toward South America due to a strong counter current.

Question 16

A cold, moist air mass that forms over water is called what?

Answer 16

mP (aka meridian, Polar)

Question 17

The greatest contrast in both temperature and moisture will occurs along the boundaries separating which air masses?

Answer 17

mT and cP

Question 18

An air mass is characterized by similar properties of ___________ and ___________.

Answer 18

Temperature, moisture

Question 19

The rising of warm air up and over cold air is called _________ and is associated with a _________ front.

Answer 19

Overrunning, warm

Question 20

A stationary front does not move because of what?

Answer 20

The winds are blowing parallel to the front

Question 21

What type of weather front would be responsible for the following conditions: HIGH CLOUDS INCREASING AND COLD IN THE MORNING. CLOUDS INCREASING AND LOWERING IN THE AFTERNOON WITH A CHANCE O RAIN/SNOW AT NIGHT. PRECIPITATION ENDING THE NEXT MORNING, BECOMING MUCH WARMER. THE WINDS SHIFT FROM LIGHT EASTERLY DIRECTION TO SOUTHEAST AND FINALLY SOUTHWEST DIRECTION THROUGHOUT THE TIME PERIOD.

Answer 21

Warm front

Question 22

Air ________ above an area of low pressure and ________above an area of high pressure.

Answer 22

Rises, sinks

Question 23

A small, faster moving disturbance imbedded in a long wave is called a what?

Answer 23

A shortwave

Question 24

The air _______ at an area of high pressure in both the north and south hemispheres.

Answer 24

Diverges

Question 25

The PGF is …

Answer 25

Pressure Gradient Force

Question 26

The _________ jet stream is stronger during the _________.

Answer 26

Polar front, winter

Question 27

At 60 degrees latitude in both the northern and Southern Hemisphere is a semi-permanent area of ______ pressure.

Answer 27

Low

Question 28

Winds in the upper levels are ________ while surface winds are _________.

Answer 28

Geostrophic, ageostrophic