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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 formula for work done?
(a) Effort multiplied by distance.
(b) Effort times gravitational force.
(c) Distance divided by strength.
(d) Distance plus effort.

2. What is a fulcrum?
(a) A pivot point.
(b) A special sort of wedge.
(c) A point at which inertia is overcome.
(d) A formula for determining energy needed to do work.

3. What is suction referred to in the act of flying?
(a) Lift.
(b) Glide.
(c) Floating.
(d) Sinking.

4. What is the density of salt water compared to fresh water?
(a) It depends on their electrical charge.
(b) Salt water is denser.
(c) Fresh water is denser.
(d) They have the same density.

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

Short Answer Questions

1. What is an object's weight divided by its volume?

2. In how many elements did the Greek believe?

3. What is electricity flowing through a wire?

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

5. How many types of gears are there?

(see the answer key)

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