General Science Review 7.2 Question Preview (ID: 12278)
Air Pressure.
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Air pressure is
a) a force that results from the weight of the atmosphere pushing down on an area
b) a force that results from the volume of atmosphere spreading out in an area
c) a force that results from the height of atmosphere pushing down on an area
d) a force that results from the energy of the atmosphere spreading out in an area
Denser air has a
a) higher air pressure
b) lower air pressure
c) greater volume/mass
d) 2 of the choices
Air pressure is measured with a
a) barometer
b) hygrometer
c) thermometer
d) odometer
A __________ barometer has____________
a) mercury; liquid
b) mercury; no liquid
c) aneroid; liquid
d) 2 of the choices
Altitude is
a) 2 of the choices
b) elevation
c) distance above sea level
d) average level of the surface of the oceans
Air pressure __________ as altitude ___________
a) decreases; decreases
b) increases; decreases
c) increases; increases
d) 2 of the choices
The gas molecules are ______________ at a _______ altitude
a) far apart; high
b) close together; high
c) quick; low
d) slow; low
You become short of breath at high altitudes because the air is
a) less dense at the top of a mountain
b) less dense at the bottom of a mountain
c) more dense at the top of a mountain
d) none of the choices
The greater the air pressure in a mercury barometer, the
a) higher the mercury rises
b) lower the mercury rises
c) thinner the walls of the barometer
d) thicker the walls of the barometer
Why doesn't air pressure crush a desk?
a) the air pushing down is balanced by the air pushing up
b) the air pushing down is greater than the air pushing up
c) the air pushing down is less than the air pushing up
d) the only air is pushing up on the desk
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