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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. What is convection?
(a) When heat causes wind.
(b) Heat moving from a liquid or gas molecule to another.
(c) The way a molecule radiates heat.
(d) When heat increases velocity.

2. What does the inclined plane do?
(a) Decreases gravitational force.
(b) Extends the distance to a rise.
(c) Decreases effort.
(d) Increases effort.

3. What is the result of a collision of molecules which break on impact forming new and different molecules?
(a) Fission.
(b) Fusion.
(c) Radiation.
(d) Combustion.

4. What do compound levers contain?
(a) No fulcrum but two points of force and two of load.
(b) Two fulcrums and one point of force and load.
(c) A single fulcrum and two points of force and two of load.
(d) Two fulcrums and two points of force and two of load.

5. What does one have to understand in order to understand the way things work?
(a) The reason something is made.
(b) The terms of physics.
(c) The underlying principle.
(d) The function of something.

6. What causes expansion?
(a) Heat.
(b) Gravity.
(c) Inertia.
(d) Cold.

7. What imparts movement into the air or water around them on a ship?
(a) Cams.
(b) Levers.
(c) Bits.
(d) Propellers.

8. What controls direction on a ship?
(a) A screw.
(b) A valve.
(c) A drive.
(d) A rudder.

9. What occurs when very small atoms smash together?
(a) Nuclear fission.
(b) Nuclear inertia.
(c) Nuclear fusion.
(d) Nuclear clarification.

10. What are different level marks for different types of water on the side of a ship called?
(a) Flow marks.
(b) Horizon marks.
(c) Anchor marks.
(d) Plimsoll lines.

11. What is applied to a lever to make it move?
(a) Gravitational pull.
(b) Work.
(c) Force.
(d) Balance.

12. What do you have to use in order to accomplish work with half the effort?
(a) Ten percent of the distance multiplied by one-third of the effort.
(b) Twice the distance.
(c) One-third the distance.
(d) Half the distance.

13. What is a substance that contains only one type of atom?
(a) A molecule.
(b) A quantum.
(c) An element.
(d) A cell.

14. The rack and pinion is an example of ______________.
(a) A gear.
(b) A stifle.
(c) A lever.
(d) A wedge.

15. What is one example the author uses of a wedge?
(a) A ship's ramp.
(b) An escalator.
(c) A block and tackle system.
(d) A type of door stop.

Short Answer Questions

1. What is the main idea in Part 2 of the book?

2. What is an absence of substance?

3. What forms a molecule?

4. Through what can heat not travel?

5. How many forces hold things together?

(see the answer keys)

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