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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 principle behind the action of any machine?
(a) The type of energy it takes to make the machine work.
(b) The amount of energy it expends.
(c) The conservation of energy.
(d) The amount of energy it saves.

2. Upon what does the amount of upthrust of an object in water depend?
(a) On what the object's salinity is.
(b) On what the water's electrical charge is.
(c) On how much water the object displaces.
(d) On whether or not the object is greater than one centimeter in diameter.

3. Upon what principle does a pulley work?
(a) It is easier to overcome gravity than force.
(b) The rotation of one gear pulls the other.
(c) The amount of work required is halved by the amount of effort.
(d) It is easier to pull something down rather than up.

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

5. What is an absence of substance?
(a) Gravity.
(b) Outer space.
(c) A vacuum.
(d) Matter.

Short Answer Questions

1. Why is cold water denser than warm water?

2. The rack and pinion is an example of ______________.

3. What is any engine that burns fuel inside the engine?

4. What colors make up all light?

5. What controls the movement in a gear system?

(see the answer key)

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