Vibrations

Sound is a form of?

• energy

• pitch

• volume

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Frequency in sound waves is best defined as

• the highest sound

• number of vibrations per second

• The lowest sound

• how long the strings are on an instrument

How high or low a sound is the definition of

• sound

• matter

• pitch

• volume

Tags

NGSS.MS-PS4-1

When Mr. Sinyard yells his name in a cave, the sound reflects off the walls of the cave and travels back to his ears.  What is this called?

• refraction

• amplitude

• pitch

• echo

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NGSS.MS-PS4-2

Which of the following is required for sound?

• chemicals

• vibrations

• water

• instruments

What happens when a rubber band is stretched tight and plucked with a finger?

• It makes a sound, creating vibration

• It vibrates, creating a sound

• It creates heat, causing vibration.

• It reflects light, causing sound.

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NGSS.MS-PS4-1

Dionne and Zoe are partners in science class. They have been asked to design a device that will communicate sound across a distance. Dionne thinks their device would work best if they used some kind of solid object to transfer the sound across a distance. Zoe, on the other hand, thinks their device would work better if it used the air to transfer the sound. Who is correct? Why?

• Zoe because sound vibrations travel best through the particles in air

• Dionne because sound vibrations cannot travel through the particles in air

• Zoe because sound vibrations cannot travel through the particles in solids

• Dionne because sound vibrations travel best through the particles in solids

Tags

NGSS.MS-PS4-2

Chloe is designing a device to communicate across a distance by using sound. She is doing some research before she decides on her design plan. She looks at a magnified diagram of the particles in a solid, liquid, and gas, as shown. Chloe needs her device to communicate sound quickly. Using the diagram, what information will help Chloe create the fastest communication device?

• Chloe needs her device to communicate sound quickly. Using the diagram, what information will help Chloe create the fastest communication device?

• Sound waves always travel at the same speed in a solid and a liquid.

• Sound waves travel the fastest in a gas because the particles are the farthest apart.

• Sound waves travel the fastest in a solid because the particles are the closest together.

What is the term for the number of vibrations per second of a sound wave?

• Frequency

• Amplitude

• Wavelength

• Velocity

Which of the following materials would best transmit sound vibrations?

• Air

• Water

• Steel

• Vacuum

Tags

NGSS.MS-PS4-2