The planetary vorticity of an air parcel moving from low toward high latitude in the Northern Hemisphere will
a. increase.
b. decrease.
c. remain constant.
d. change from positive to negative.
e. change from negative to positive.
Q. 2Lee-side lows are
a. storms (extratropical cyclones) that form on the eastern (lee) side of a mountain range.
b. thermal lows that form due to surface heating over deserts.
c. storms (tropical cyclones) that form near the Leeward Islands.
d. low pressure areas that form over oceans, then move onshore of the lee side of the coastline.
e. storms that form on the lee side of lakes.
Q. 3If we assume that the absolute vorticity of flowing air is conserved, air moving northeastward will bend ____ to compensate for the ____ in Earth's vorticity.
a. anticyclonically; decrease
b. anticyclonically; increase
c. cyclonically; increase
d. cyclonically; decrease
e. cyclonically; lack of change
Q. 4Which statement about vorticity is least accurate?
a. Earth's vorticity in the Northern Hemisphere is positive.
b. Earth's vorticity is zero at the poles.
c. Air that spins cyclonically possesses positive vorticity.
d. Absolute vorticity is the sum of Earths vorticity and the relative vorticity.
e. Vorticity is the measure of the spin of small air parcels.
Q. 5On an upper-level chart where the isotherms cross the isobars (or contours) and temperature advection occurs, the atmosphere is called
a. barotropic.
b. geostrophic.
c. hydrostatic.
d. baroclinic.
e. barometric.
Q. 6A small, moving disturbance imbedded in a longwave is called a
a. lee-side low.
b. wave cyclone.
c. shortwave.
d. frontal wave.
e. Rossby wave.
Q. 7Atmospheric shortwaves usually move ____ longwaves, and ____ when they move through a longwave ridge.
a. faster than; weaken
b. faster than; strengthen
c. slower than; weaken
d. slower than; strengthen
e. at the same speed as; weaken
Q. 8In a mid-latitude cyclone, the warm sector is located
a. behind the warm front.
b. between the cold and warm fronts.
c. below the occluded front and above the cold front.
d. ahead of a stationary front.
e. above the occluded front and below the cold front.
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