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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 if the force of upthrust is equal to the weight of an object in water?
(a) The object moves across the surface of the water.
(b) The object sinks.
(c) The object projects out of the water.
(d) The object floats.

2. What happens when you exert your strength across a longer distance?
(a) Your effort is reduced, and your lesser strength becomes sufficient.
(b) Nothing happens. It is all balanced by the decreased work required.
(c) Your effort is reduced so you can take advantage of your greater strength.
(d) Your effort is reduced, but your strength has to be increased.

3. What debris does a nuclear explosion create?
(a) Acid rain.
(b) Steam.
(c) Fallout.
(d) None.

4. What is white light?
(a) An inversed reflection of one color of the light spectrum.
(b) A light wave that vibrates higher than the colors that make up light.
(c) A combination of the three colors that make up all light.
(d) An absence of any light.

5. What does a convex lens do?
(a) Creates a smaller image of a larger image.
(b) Causes an image to appear three dimensional.
(c) Causes an image to flatten.
(d) Creates a larger image of a smaller one.

Short Answer Questions

1. What colors make up all light?

2. What emits both infrared and light rays?

3. What controls direction on a ship?

4. How does floating harness the power obtained by squeezing or stretching molecules?

5. What happens when visible rays cross the lens of our eye and are bent through the convex surface?

(see the answer key)

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