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33 terms

Met1010 Test 2 201-233

STUDY
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On an upper-level chart the wind tends to blow
parallel to the isobars or contours
A ridge on an upper-level isobaric chart indicates
higher than average heights
On an isobaric weather chart, the spacing of the height contours indicates the magnitude of the pressure gradient force.
true
Newton's first law states that "an object at rest ___ as long as no force is exerted on the object."
will remain at rest
During a reversible adiabatic process, the pressure gradient force is parallel to the isobars
false
The Coriolis force is the force that causes the wind to blow.
false
The hydrostatic equation describes the equilibrium between the:
vertical pressure gradient force and gravity
Why is there a minus sign in the hydrostatic equation? (The hydrostatic equation is.)
as pressure decreases, height increases
The fundamental laws of motion were formulated by:
Sir Isaac Newton
The "force exerted on an object equals its mass times the acceleration produced" is a description of:
Newtons Second Law
Which of the following forces does not have a direct effect on horizontal wind motions?
gravitational force
Which of the following can influence wind direction?
coriolis force, pressure gradient, and centripetal force (all of these)
Which of the following forces CANNOT act to change the speed of the wind?
Coriolis force
The net force on air moving in a circle at constant speed is
inward toward the center of rotation
The amount of pressure change that occurs over a given horizontal distance is called the:
pressure gradient
Which of the statements below is NOT correct concerning the pressure gradient force?
it is non-existent at the equator
The pressure gradient force is directed from higher pressure toward lower pressure:
at all places on earth
The force that would cause a stationary parcel of air to begin to move horizontally is called the
pressure gradient force
Which of the following produces the strongest Coriolis force?
fast winds, high latitude
The ____ is an apparent force created by the earth's rotation
Coriolis force
The rate of the earth's rotation determines the strength of the
Coriolis force
The Coriolis force is the result of:
rotating earth
Which statement below is NOT correct concerning the Coriolis force
it causes the winds to blow faster
If the earth stopped rotating which of the following would NOT be true?
there would still be a Coriolis force
A wind blowing at a constant speed parallel to straight line isobars with the pressure gradient force (PGF) and the Coriolis force in balance is called a:
geostrophic wind
The net force acting on air which is blowing parallel to straight contours at constant speed is
to the right of the winds motion in the northern hemisphere
Suppose that the winds aloft are geostrophic and blowing from the north. Low pressure is located to the
east
Suppose that the winds aloft are geostrophic and blowing from the north. With the same orientation of isobars at the surface, the winds would blow from the:
northwest
The winds aloft in the middle latitudes would not blow from the west if
the air over high latitudes became warmer than over the equator
If in the Northern Hemisphere the upper level winds above you are blowing from the south, then it is a good bet that a trough of low pressure is to the
west of you
When the wind blows in a more or less west to east direction, the wind flow pattern is called:
zonal
A wind that blows at a constant speed parallel to curved isobars or contour lines is called a:
geostrophic wind
If directly above you at 10,000 feet the wind is blowing from the south, then it is a good bet that at 10,000 feet, the center of lowest pressure is left of you, while the center of highest pressure is ___ of you
right