Physical Science chapter 16 final

Which of the following is not a fluid?

• hydrogen gas

• molten iron

• helium plasma

• All the above are fluids.

As you increase the area on which a given force acts, the pressure exerted __________.

• decreases

• does not change

• increases

• may either increase or decrease

Sitting on a balloon causes additional pressure to be applied to __________.

• all the air in the room surrounding the balloon

• all the air inside the balloon

• the air at the sides of the balloon

• the air at the top of the balloon

If the buoyant force on an immersed object is less than the weight of the object, then it will __________.

• burst

• rise

• sink

• do none of the above

Kerosene has a density of 0.81 g/cm³. If you add kerosene to a beaker of water, the kerosene will __________.

• become evenly distributed in the water

• clump together in the middle of the beaker

• float on the water

• sink below the water.

Many fish can adjust their buoyancy __________.

• by adding pebbles to or removing rocks from their gut systems

• by adding water to or removing water from their buoyancy chambers

• by adding gas to or removing gas from their inflatable fins

• by adding gas to or removing gas from their swim bladders.

What causes viscosity?

• A. the amount of emulsifier present in a fluid

• B. the amount of gas particles present in a fluid

• C. the friction between the particles in a fluid

• D. the number of particles per unit volume in a fluid

Which gas law explains why a balloon left in a car will increase in size if the car warms up?

• A. Dalton's law

• B. Boyle's law

• C. Charles' law

• D. Gay-Lussac's law

If the volume of a gas is held constant, what would cause the pressure of a gas to quadruple?

• A. decreasing the temperature by a factor of 4

• B. decreasing the temperature by a factor of 2

• C. increasing the temperature by a factor of 4

• D. increasing the temperature by a factor of 2

The function of a hydraulic lift is based on which of the following?

• A. Archimedes' principle

• B. Bernoulli's principle

• C. Gay-Lussac's law

• D. Pascal's principle