# Unit 3 Physical Science, Gas Laws: Question Preview (ID: 29696)

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Which statement best describes air pressure at high altitudes?
a) Air pressure decreases as altitude increases.
b) Air pressure increases as altitude increases.
c) It is impossible to accurately measure air pressure at high altitudes.
d) Air pressure does not change as altitude increases.

If volume decreases in a gas, what happens to pressure?
a) Pressure decreases.
b) Pressure increases.
c) Pressure increases and then decreases.
d) Pressure stays the same.

If temperature increases, what happens to pressure?
a) Pressure decreases.
b) Pressure stays the same.
c) Pressure increases.
d) None of the above

Which of the following best describes the gas in a scuba tank?
a) The gas barely fills its container.
b) The gas is compressed.
c) The molecules of gas are moving slowly.
d) None of the above

If you place a balloon in the freezer, it will __________.
a) deflate because volume is inversely proportional to temperature
b) deflate because volume is directly proportional to temperature
c) stay the same size because there is no relationship between volume and temperature
d) expand because volume is inversely proportional to temperature

What happens when you compress a gas?
a) You increase its volume.
b) You decrease its temperature.
c) You decrease its pressure.
d) You increase its density.

In the Gas Laws lab, you changed temperature to change __________.
a) gravity and volume
b) mass and volume
c) weight and volume
d) volume and pressure

Which of the following is the most accurate statement concerning volume and pressure of a gas?
a) Volume of a gas is inversely proportional to pressure of that gas in any container.
b) Volume of a gas is directly proportional to pressure of that gas in any container.
c) Volume of a gas is equal to pressure of that gas in any container.
d) Volume of a gas is always greater than pressure of that gas in any container.

What is the temperature of a gas in which the atoms are moving very, very slowly?
a) hot
b) cold
c) room temperature
d) None of the above

Which of the following measures atmospheric pressure?
a) a ballast tank
b) a thermometer
c) a barometer
d) None of the above

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