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

2. How does a ship vary in density?
(a) According to how much water is on board.
(b) According to its load.
(c) According to how long it takes to get underway.
(d) According to the speed it is making.

3. The speed of the vibration affects ____________.
(a) The wavelength.
(b) The density.
(c) The pattern.
(d) The foil.

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

5. What pumps refrigerant out in an air conditioner?
(a) Oscillator.
(b) A gear.
(c) A compressor.
(d) A solenoid.

Short Answer Questions

1. Why can a dog hear a dog whistle that humans cannot?

2. What does one have to understand in order to understand the way things work?

3. What causes expansion?

4. What is the resistance of an object to any change in its speed or direction?

5. What is one step in creating liquid crystal displays?

(see the answer key)

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