Sound and Waves Review

A student stretched plastic wrap over a glass container and sprinkled uncooked rice on top of the plastic wrap, as shown in the illustration.

The student then struck a tuning fork with a rubber mallet, and the fork started producing a sound. When the tuning fork was held close to the plastic wrap, the rice grains began moving. Which statement about sound is supported by this observation?

• Sound can be blocked by a barrier.

• Sound waves travel in all directions.

• Small objects, such as rice grains, absorb sound.

• Sound waves carry energy from a vibrating object to other objects.

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What is a transverse wave?

• The transfer of energy in a motion that is perpendicular to the direction the wave is traveling.

• The energy transport is in a parallel direction.

• The energy moves backwards.

• There is no energy transfer.

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What do waves primarily transport?

• objects

• energy

• matter

• nothing

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Below is a chart of how FAST sound travels through different mediums (solids, liquids, & gasses).

What does the table tell us about how sound travels?

• Sound travels at the same speed.

• Sound travels fastest through solids.

• Sound travels fastest through liquids.

• Sound travels fastest through gasses.

Sound is produced by​ (a)  

Sound and light are a form of ​ (b)  

How loud or soft a sound is​ (c)  

How high or low a sound is​ (d)  

• vibrations
• energy
• volume
• pitch

If a student playing the drums hits the drums with greater force, the sound would be...

• quieter

• louder

• lower in pitch

• higher in pitch

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When a book is dropped onto a wooden desk, the molecules in the wood begin to vibrate from the force of the book. Which of these is produced by the vibrations?

• friction

• interference

• sound waves

• ultrasonic waves

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A whistle produces a sound because blowing air in the whistle causes...

• The whistle material to shake.

• The air inside the whistle to vibrate.

• The air to be absorbed by the whistle.

• The air in the whitle to heat up and expand.

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Look at the diagram below.

The bell makes a sound when it is hit by the clapper because the bell...

• rotates

• vibrates

• releases heat

• produces electricity

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The diagram shows a ball floating in a tank of water with five positions marked A-E.

From which two positions can a student drop a rock to move the ball from its original position to the TALLEST heights?

• Position A

• Position B

• Position C

• Position D

• Position E

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