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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 does the Mechanics of Movement explore?
(a) How the movement of anything can be either a net gain or net loss of energy.
(b) How pulleys ultimately lose energy that can never be regained.
(c) How the conservation of energy plays into movement, force, and effort.
(d) How pulleys can create energy.

2. What is one step in creating liquid crystal displays?
(a) Filtering the light for reds.
(b) Bending the light to forty-five degree angles.
(c) Polarizing the light.
(d) Filtering the light for greens.

3. What does increasing heat do to molecules?
(a) It increases the movement of molecules.
(b) It slows them down.
(c) Nothing.
(d) It makes them break apart.

4. What are two things a sail can do for a craft?
(a) Propel and repel.
(b) Propel and stop.
(c) Lift and Slow.
(d) Give pulpulsion and direction.

5. When an object absorbs light rays, how is the energy held in the object?
(a) As kinetic energy.
(b) As heat.
(c) There is no energy involved.
(d) As inertial energy.

Short Answer Questions

1. How does a rocket engine power the craft?

2. What do the double walls of a thermos enclose?

3. What is the resistance of an object to any change in its speed or direction?

4. What are small propellers mounted in the base of a ship's hull?

5. What is the principle behind the action of any machine?

(see the answer key)

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