Name:    Practice Test - Buoyancy

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

Which of the following would NOT affect the level at which a cargo ship floats in a body of water?
 a. the depth of the water c. the mass of the ship's cargo b. the shape of the ship d. the density of the ship's material

2.

An object displaces a volume of fluid that
 a. is equal to its own volume. c. is greater than its own volume. b. is less than its own volume. d. is more dense than itself.

3.

If an object weighing 50 N displaces a volume of water with a weight of 10 N, what is the buoyant force on the object?
 a. 60 N c. 40 N b. 50 N d. 10 N

4.

Which of the following is true of the buoyant force?
 a. It acts in the downward direction. b. It acts with the force of gravity. c. It acts in the upward direction. d. It makes an object feel heavier.

5.

What effect does a buoyant force have on a submerged object?
 a. It causes the object to sink in a fluid. b. It causes a net force acting upward on the object. c. It causes the object to move sideways in a fluid. d. It causes a net force acting downward on the object.

6.

If an object floats, the volume of displaced water is equal to the volume of
 a. the entire object. b. the portion of the object that is above water. c. the portion of the object that is submerged. d. exactly half of the object.

7.

A ship stays afloat as long as the buoyant force is
 a. less than the ship’s weight. b. equal to the ship’s weight. c. less than the ship’s speed. d. greater than the ship’s speed.

8.

What scientific rule states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
 a. Archimedes’ principle b. Pascal’s principle c. Bernoulli’s principle d. Newton’s third law of motion

9.

Snowshoes enable a person to walk on deep snow because the snowshoes
 a. decrease the person’s weight on the snow. b. increase the area over which the person’s weight is distributed. c. increase the pressure on the snow. d. increase the buoyancy of the person.

10.

An object that is more dense than the fluid in which it is immersed will
 a. sink. b. rise. c. neither rise nor sink. d. sink at first, than rise slowly.