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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 happens when an object is placed in water?
(a) The water molecules push against the object.
(b) The object sinks.
(c) The water is repelled by the electrical force of the object.
(d) The object absorbs the water's atoms.

2. What is a first-class lever?
(a) Where the distance is further from the fulcrum than the effort.
(b) Where the effort is a greater distance from the fulcrum than the load.
(c) Where the effort and the load are equal distances from the fulcrum.
(d) Where there is no load needed for the effort.

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

4. What are tanks that take in water to increase the density of the craft?
(a) Ballast.
(b) Variable.
(c) Bilge.
(d) Rolling.

5. How does floating harness the power obtained by squeezing or stretching molecules?
(a) By energy "floating" through atomic fields and breaking the bonds to release energy.
(b) By gathering the individual electrons that are released.
(c) Through the form of upthrust.
(d) By squeezing an atom to split the proton and neutron.

Short Answer Questions

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

2. What is the transfer of heat through infrared rays?

3. Upon how many major principles do propellers and rudders work?

4. What is applied to a lever to make it move?

5. What does the Mechanics of Movement explore?

(see the answer key)

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