View a FREE sample

This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. What happens if the force of upthrust is equal to the weight of an object in water?
(a) The object floats.
(b) The object sinks.
(c) The object moves across the surface of the water.
(d) The object projects out of the water.

2. What is the density of salt water compared to fresh water?
(a) They have the same density.
(b) Fresh water is denser.
(c) It depends on their electrical charge.
(d) Salt water is denser.

3. What emits both infrared and light rays?
(a) A light bulb.
(b) A planet.
(c) The moon.
(d) The sun.

4. Through what can heat not travel?
(a) Very porous elements.
(b) Very dense elements.
(c) There is nothing through which heat cannot travel.
(d) A vacuum.

5. What are large fins which adjust their tilt to compensate for waves?
(a) Fans.
(b) Stabilizers.
(c) Rotaries.
(d) Screws.

Short Answer Questions

1. Under normal circumstances, what force(s) does a molecule possess?

2. When an object absorbs light rays, how is the energy held in the object?

3. What is applied to a lever to make it move?

4. What is an absence of substance?

5. Where is steam still used?

Short Essay Questions

1. How does the atom bomb work?

2. What is an internal combustion engine? Cite several examples of such engines.

3. What determines if an object will float?

4. Discuss the relation of effort to distance.

5. Describe how a door wedge works.

6. Discuss how sails are used on a boat.

7. How does the inclined plane require less strength for a task?

8. What does the principle of the conservation of energy state? How does Part 1 relate to that principle?

9. What is a vacuum? What is one invention that uses this principle?

10. Discuss why the density of water varies.

(see the answer keys)

This section contains 705 words (approx. 3 pages at 300 words per page) View a FREE sample