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This quiz consists of 5 multiple choice and 5 short answer questions through Part 3, Working with Waves.

Multiple Choice Questions

1. What is the most common form of inclined plane found in machines?
(a) The rocker.
(b) The rods.
(c) The pully.
(d) The wedge.

2. Why does a thermos lose heat?
(a) The oxygen absorbs the heat.
(b) The heat can travel through the stopper.
(c) The molecules eventually slow down.
(d) The argon absorbs the heat.

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

4. What turns the crankshaft in an internal combustion engine?
(a) Pulley.
(b) Piston.
(c) Gear.
(d) Steam.

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

Short Answer Questions

1. What do machines that keep something cool do to heat?

2. How many ways can heat travel?

3. What is an example of a second-class lever?

4. What happens if the force of upthrust is equal to the weight of an object in water?

5. What causes increased heat in the process of conduction?

(see the answer key)

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