Earth Science Chapter 18

false

Low pressure systems are usually associated with clear weather. true or false

are generally faster than surface winds

Upper air winds ________. a. are unaffected by the Coriolis force b. are greatly influenced by friction c. are generally faster than surface winds d. both A and B

true

In the Northern Hemisphere, winds blow clockwise and outward from the center of anticyclones. true or false

true

If the barometer indicated 1020 millibars, air pressure would be considered high. true or false

westerlies

Most of the United States is situated in which zone of prevailing winds? a. doldrums b. westerlies c. subpolar easterlies d. trade winds

falling

If stormy weather were approaching, the pressure tendency would probably be ________. a. rising b. falling c. steady d. none of these

in winter

When are upper air winds fastest? a. in winter b. whenever the temperature gradient is weak c. in summer d. These winds maintain roughly the same speeds throughout the year.

29.92 inches

Standard sea level pressure in inches of mercury is ________. a. 29.92 inches b. 14.70 inches c. 28.70 inches d. 7.52 inches

true

Closely spaced isobars indicate high wind speeds. true or false

pressure gradient force

The force that generates wind is ________. a. gravity force b. Coriolis force c. pressure gradient force d. centrifugal force

false

The Coriolis effect is strongest at the equator and diminishes in strength poleward. true or false

evening and flows toward the water

A land breeze usually originates during the ________. a. day and flows toward the land b. day and flows toward the water c. evening and flows toward the land d. evening and flows toward the water

subtropical high

The Sahara and Australian deserts (among others) are associated with the ________. a. polar high b. equatorial low c. subtropical high d. subpolar low

precipitation

Low air pressure systems are usually associated with ________. a. clear weather b. diverging winds c. descending air d. precipitation

day and flows toward the land

A sea breeze usually originates during the ________. a. evening and flows toward the land b. day and flows toward the water c. day and flows toward the land d. evening and flows toward the water

true

The ultimate cause of a sea breeze is the unequal heating of land and water. true or false

anticyclone

What is the technical name for a high pressure center? a. front b. cyclone c. anticyclone d. doldrums

false

The Coriolis effect influences wind speed but not wind direction. true or false

both wind speed and latitude

Which of these factors influence the magnitude of the Coriolis Effect? a. wind speed b. wind direction c. latitude d. both wind speed and latitude

true

Cyclones are usually associated with stormy weather. true or false

all of these

Surface high pressure systems are usually associated with ________. a. clear weather b. convergence aloft and diverging surface winds c. descending air d. all of these

false

An isobar is a line connecting places of equal humidity. true or false

true

Anticyclones characteristically have winds blowing out from their centers. true or false

false

High pressure systems are usually associated with stormy weather. true or false

clockwise and toward the center

In the Southern Hemisphere, the winds associated with a low pressure system blow ________. a. counterclockwise and toward the center b. clockwise and outward from the center c. counterclockwise and outward from the center d. clockwise and toward the center

rising

If "fair" weather were approaching, the pressure tendency would probably be ________. a. steady b. falling c. rising d. none of these

true

A southwest wind blows toward the northeast. true or false

anemometer

Which of these instruments is NOT used to measure air pressure? a. barograph b. aneroid barometer c. mercurial barometer d. anemometer

equatorial low

This pressure zone is associated with abundant precipitation and warm temperatures. a. subtropical high b. subpolar low c. polar high d. equatorial low