Fluid and Gas Properties Practice Test
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Properties of Fluids and Gases Practice Test
Choose the best answer for the following questions:
1) A fluid is:
a) a liquid or a colloid
b) a gas or a solid
c) a solid
d) a liquid or a gas
2) Temperature is:
a) measure of heat
b) measure of the average speed of the particles
c) measure of potential energy
d) unit of energy
3) Archimedes’ principle states that the buoyant force on an object in a fluid is equal to the _____ of the fluid displaced.
a) volume
b) weight
c) pressure
d) kinetic energy
4) Pascal’s principle is the basis for _____.
a) aerodynamics
b) buoyancy
c) hydraulics
d) changes in state
5) _____ is caused by moving particles colliding with the inside walls of their container.:
a) heat
b) force
c) pressure
d) volume
6) ________ is the amount of force exerted per unit of area.
a) pressure
b) volume
c) moles
d) temperature
7) When volume increases, what happens to a sample of gas?
a) Temperature increase
b) Pressure decreases
c) Nothing happens
d) Both a and b can happen
8) According to Bernoulli, what happens as the velocity of fluid flow increases?
a) force increases
b) force decreases
c) pressure decreases
d) pressure increases
9) Why would a soda can crush when the hot water vapor was suddenly cooled in ice water?
a) The drop in temperature caused the volume of the gas in the can to increase
b) The drop in temperature caused the volume of the gas in the can to decrease
c) The drop in temperature caused to the pressure of the gas in the can to increase
d) The drop in pressure in the can caused the volume to increase
10) What has to be true in order for an object to float in a fluid?
a) density of the object has to be less than the density of the fluid
b) weight of the fluid displaced by the object has to be less than the weight of the object
c) object has to be lighter than the fluid
d) object has to be more dense than the fluid
Answer the following as completely as possible – make an effort to include everything that you know that relates to the question.
11) Explain why an object that has a volume of 2.0L and a mass of .56kg will or will not float in water (Density of water – 1 g/mL). Show all of your work.
12) Explain the relationship between temperature and pressure. Be sure to include a discussion of the behavior of the particles.
13) Explain the relationship between volume and pressure using the kinetic molecular theory of matter.
14) Explain how Pascal’s principle about pressure works. Include in your discussion how is applies specifically to hydraulic systems.
15) If you have an hydraulic system where the first piston has an area of .045m2 and the second piston has an area of .125m2, and you applied a downward force of 300N, how much weight could you lift?
16) If I had a scuba tank of air with 235kPa of pressure at 32¥C, and I traveled to Lake Baikal (Siberia) where the temperature of -14¥C, what would be the new pressure of the scuba tank?
17) I have a sample of gas with a volume of 450mL, a pressure of 1.5 atm, and a temperature of 27¥C. If I compress that gas to 130kPa of pressure, what will the new volume be?
18) A balloon inflated in a room at 24 ºC has a volume of 4.00 L. The balloon is then heated to a temperature of 58 ºC. What is the new volume if the pressure remains constant?
19) Fill in the following statements:
a) When pressure doubles, volume changes by _________________________
b) When temperature is increased 4 times, volume changes by _____________________
c) When pressure is decreased by one eighth, temperature changes by _______________
d) When volume in decreased by 1/10, pressure changes by________________________
20) Using the information provided and that which you know, carry out the following conversions:
1 atm = 101.3 kPa = 750 mmHg 1N = .225 lbs
a) 3.4 atm = ________________kPa
b) 500 N = __________________lbs
c) 43¥C = ____________________K
d) 900mmHg=_______________atm
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