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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Introduction, Floating, Flying and Pressure Power, pp.91-141.

Multiple Choice Questions

1. What is a wheel and rod attacked by a hinge?
(a) A spur.
(b) A worm.
(c) A prank.
(d) A crank.

2. What is an example of a second-class lever?
(a) A crane.
(b) A nutcracker.
(c) A clock.
(d) An engine block system.

3. 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.

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

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

Short Answer Questions

1. What happens when you exert your strength across a longer distance?

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

3. What is the most common form of inclined plane found in machines?

4. How does a zipper operate?

5. In flying, what is used to overcome weight from gravity?

(see the answer key)

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