Exploring Sound and Vibrations

What is sound?

• A type of light energy

• A form of mechanical energy

• A type of chemical energy

• A form of electrical energy

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Which of the following materials will sound travel through the fastest?

• Air

• Water

• Steel

• Vacuum

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What causes sound waves to be produced?

• Light reflection

• Vibrating materials

• Chemical reactions

• Electrical currents

Explain why sound travels faster in solids than in gases.

• Solids have more energy than gases.

• Particles in solids are closer together than in gases.

• Solids are heavier than gases.

• Solids have more space for sound to travel.

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How does the pitch of a sound change with the speed of vibration?

• Faster vibrations produce a lower pitch.

• Slower vibrations produce a higher pitch.

• Faster vibrations produce a higher pitch.

• Speed of vibration does not affect pitch.

Describe how sound waves transmit energy.

• By reflecting off surfaces

• By vibrating particles in a medium

• By changing color

• By creating light

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NGSS.MS-PS4-1

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A student notices that a drum produces sound when struck. Explain the process that causes this sound.

• The drum absorbs light and releases sound.

• The drum's surface vibrates, creating sound waves.

• The drum changes temperature, producing sound.

• The drum releases stored chemical energy as sound.

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Plan an experiment to demonstrate how sound travels through different materials.

• Use a flashlight to observe light passing through materials.

• Use a tuning fork and test sound transmission through air, water, and a metal rod.

• Use a thermometer to measure temperature changes in materials.

• Use a magnet to test magnetic properties of materials.

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A musician plays a note on a guitar and then on a piano. Compare the sound produced by these two instruments.

• Both instruments produce sound by electrical currents.

• Both instruments produce sound by vibrating strings, but the method of vibration differs.

• The guitar produces sound by air, while the piano uses water.

• The piano produces sound by light, while the guitar uses heat.

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Identify an application of sound in the community and explain its importance.

• Using sound to measure temperature

• Using sound in musical concerts for entertainment

• Using sound to change the color of objects

• Using sound to create electrical energy

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