Water is flowing through a pipe whose cross-sectional area at point A is larger than the cross-sectional area at point B. The reading on a pressure gauge connected to the pipe at point A will be lower than the reading on a pressure gauge connected to the pipe at point B.
a. True
b. False
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[Ques. 2] Gravity causes the pressure in the ocean to vary with depth.
a. True
b. False
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[Ques. 3] If the outside air pressure decreases, the reading on a tire gauge connected to a tire decreases.
a. True
b. False
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[Ques. 4] The ratio of the density of a material to the density of water is the weight density.
a. True
b. False
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[Ques. 5] The air we breathe is mostly oxygen.
a. True
b. False
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[Ques. 6] If the volume of a container is decreased while the mass and temperature of the gas inside it stay constant, the pressure will increase.
a. True
b. False
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[Ques. 7] Air can be compressed easily because there is a great deal of empty space between air molecules.
a. True
b. False
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[Ques. 8] A helium balloon rises because of Archimedes' principle.
a. True
b. False
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[Ques. 9] An atomizer works because of Bernoulli's principle.
a. True
b. False
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[Ques. 10] The brakes in a car work because of Pascal's principle.
a. True
b. False
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