chap 8 mc

Question 1

Horizontal air pressure gradients arise from horizontal gradients in
air temperature.
vapor pressure.
air density.

Answer 1

any of these are correct

Question 2

Neglecting friction and the Coriolis Effect, what would be the direction of the wind along a coastline if the air pressure were higher over the land than over the adjacent water body?

Answer 2

from land to water

Question 3

The Coriolis Effect
arises from the fact that
friction balances the horizontal pressure gradient force.
Earth rotates
there are horizontal gradients in air density.

Answer 3

all of the above

Question 4

______ is the movement of air measured relative to the Earth’s surface.

Answer 4

wind

Question 5

In a synoptic-scale cyclone, vertical wind speeds are usually ___________ horizontal wind speeds.

Answer 5

weaker than

Question 6

a force gas

Answer 6

both direction and magnitude

Question 7

The ______ causes air to flow from areas of relatively high pressure to areas of relatively low pressure

Answer 7

pressure gradient force

Question 8

A vertical air pressure gradient is directed from the ______ to the ______.

Answer 8

troposphere to stratosphere

Question 9

is numerically equivalent to a force per unit mass.

Answer 9

acceleration

Question 10

At middle latitudes, the surface air pressure is higher in a(n)

Answer 10

anti cyclone

Question 11

At middle latitudes, the surface air pressure is ______ in an anticyclone then in a cyclone.

Answer 11

higher

Question 12

A change in horizontal air pressure gradient from 2 mb per 100 kilometers to 4 mb per 100 kilometers will result in ______ wind speed.

Answer 12

higher

Question 13

Due to the air pressure gradient alone, a parcel of air is accelerated

Answer 13

toward low pressure and perpendicular to isobars.

Question 14

Where the horizontal air pressure gradient is zero over a broad region,

Answer 14

the air is calm

Question 15

The Coriolis Effect arises from the fact that

Answer 15

earth rotates

Question 16

At middle latitudes of the Northern Hemisphere, the Coriolis Effect causes air that is initially blowing from north to south to become a wind blowing from the ________.

Answer 16

northeast

Question 17

In middle latitudes of the Northern Hemisphere, the Coriolis Effect causes a wind blowing from the west to become a(n) ______ wind.

Answer 17

north west

Question 18

In middle latitudes of the Southern Hemisphere, the Coriolis Effect causes a west wind to become a(n) ______wind.

Answer 18

southwest

Question 19

The Coriolis Effect produces its maximum deflection of moving air at the

Answer 19

poles

Question 20

The Coriolis Effect is zero and produces no deflection at the

Answer 20

equator

Question 21

n the Northern Hemisphere, the Coriolis Effect causes air initially moving southward to swerve toward the

Answer 21

south west

Question 22

The Coriolis Effect has maximum deflection at

Answer 22

the poles

Question 23

In the Southern Hemisphere, the Coriolis Effect always acts

Answer 23

at a right angle and to the left of the initial direction of motion

Question 24

In the Northern Hemisphere, the Coriolis Effect always acts

Answer 24

at a right angle and to the right of the initial direction of motion.

Question 25

The Coriolis Effect ______ in magnitude with decreasing wind speed and latitude.

Answer 25

decrease

Question 26

Friction affects horizontal winds

Answer 26

by slowing the winds and shifting them across isobars toward low pressure .

Question 27

Air that blows from land to sea typically undergoes horizontal ______ near the coastline.

Answer 27

divergence

Question 28

Air that blows from sea to land typically undergoes horizontal ______ near the coastline.

Answer 28

convergence

Question 29

Which one of the following surfaces has the least surface roughness and therefore offers the least resistance to the horizontal wind?

Answer 29

tidal mud flats

Question 30

With hydrostatic equilibrium, the vertical air pressure gradient in the atmosphere is balanced by ______.

Answer 30

gravity

Question 31

The geostrophic wind is blowing directly from west to east. The highest air pressure is located to the

Answer 31

south

Question 32

In the geostrophic wind, the Coriolis Effect is balanced by

Answer 32

the horizontal pressure gradient force.

Question 33

tThe geostrophic wind is blowing directly from north to south. The highest air pressure is located to the

Answer 33

west

Question 34

The geostrophic wind blows in a ______ path.

Answer 34

straight

Question 35

If air is flowing parallel to straight isobars, what horizontal forces are acting on the air?

Answer 35

Coriolis Effect and pressure gradient force.

Question 36

Curved large-scale horizontal wind above the atmospheric boundary layer:

Answer 36

gradient wind

Question 37

The horizontal pressure gradient force and wind speed decrease as the spacing between isobars

Answer 37

increase

Question 38

In a Northern Hemisphere anticyclone above the atmospheric boundary layer, the horizontal pressure gradient force ______ the Coriolis Effect.

Answer 38

is slightly less than

Question 39

In a Northern Hemisphere cyclone above the atmospheric boundary layer, the horizontal pressure gradient force ______ the Coriolis Effect.

Answer 39

is slightly greater than

Question 40

Horizontal wind speed generally increases with altitude above Earth’s surface because

Answer 40

friction with the surface slows the air near the ground.

Question 41

If Earth rotated in the direction opposite to what it now does, in the Northern Hemisphere

Answer 41

air would flow counterclockwise out of a surface high

Question 42

in a Northern Hemisphere ______ viewed from above, surface winds blow counterclockwise and inward.

Answer 42

cyclone

Question 43

In a Northern Hemisphere anticyclone viewed from above, horizontal winds above the atmospheric boundary layer blow

Answer 43

clockwise and parallel to isobars

Question 44

In a Southern Hemisphere anticyclone, horizontal winds above the atmospheric boundary layer blow

Answer 44

counterclockwise and parallel to isobars.

Question 45

The anemometer that is based on the effect of wind on the propagation of sound waves is the

Answer 45

sonic anemometer

Question 46

From largest to smallest, the scales of atmospheric circulation are designated

Answer 46

Correct planetary, synoptic, meso, micro.