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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. In flying, what is used to overcome weight from gravity?
(a) Lift created by the rudder.
(b) Lift created by the airfoil.
(c) Lift created by the tiller.
(d) Lift created by the nose.

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

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

4. What is applied to a lever to make it move?
(a) Gravitational pull.
(b) Force.
(c) Work.
(d) Balance.

5. What is the effort you put in combined with the distance over which the effort is done?
(a) Work.
(b) Gravity.
(c) Mendal's law.
(d) Rest.

Short Answer Questions

1. Upon what does the amount of upthrust of an object in water depend?

2. What is another type of wedge the author mentions?

3. What are different level marks for different types of water on the side of a ship called?

4. What is an example of a second-class lever?

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

(see the answer key)

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