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This quiz consists of 5 multiple choice and 5 short answer questions through Part Four: Electricity and Automation.

Multiple Choice Questions

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

2. What additional tasks can a boat with two triangular sails do?
(a) Multiply the suction force by three.
(b) Achieve two additional suction forces.
(c) Divide the suction force.
(d) Achieve one additional suction force.

3. How does a wedge move an object up an inclined plane?
(a) It doesn't ; the wedge moves the plane itself to raise an object.
(b) It lowers the plane so the object slides.
(c) It forces the object to reduce the effects of gravity.
(d) It uses the effect of gravity.

4. What forms a molecule?
(a) Six or less atoms.
(b) One or more atoms.
(c) Two or more atoms.
(d) Five or more atoms.

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

Short Answer Questions

1. If you put a copper wire and a zinc wire into a lemon, what occurs?

2. What is the factor which determines an object's ability to float?

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

4. In which direction do electrons always travel?

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

(see the answer key)

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