Sound Waves Review 23/24

When you pluck a guitar's string , you can feel them ________

• Vibrate

• Pitch

• Frequency

Answer explanation

When you pluck a guitar's string, you can feel them vibrate, creating sound waves that produce music. The correct choice is 'Vibrate'.

​ The speed of the waves vibration , the ____________It is measure in hertz.

• frequency

• amplitude

• volume

Answer explanation

Provide the explanation here.

Any audible vibration; anything that is heard.

• Amplitude

• Frequency

• Sound

Answer explanation

The correct choice is 'Sound' because it refers to any audible vibration or anything that is heard.

The picture shows ​ ​

• wave

• echo

• compression

Answer explanation

The picture shows a wave, as indicated in the answer choices. It represents a wave phenomenon, not an echo or compression.

The number of times a wave is repeated in a period.

• Amplitude

• Frequency

• Volume

Answer explanation

Frequency refers to the number of times a wave is repeated in a period, making it the correct choice in this context.

The act of squeezing pressing or making something smaller or flatter

• Compression

• Echo

• Frequency

Answer explanation

Compression is the act of squeezing, pressing, or making something smaller or flatter, making it the correct choice in this context.

What word goes with the image ?

• Compression

• Echo

• Sound

Answer explanation

The word that goes with the image is 'Sound' as the image likely represents a sound wave or audio-related concept.

On the piano you can play low notes as well as notes with a very high _______.

• compression

• echo

• pitch

Answer explanation

On the piano you can play low notes as well as notes with a very high pitch, which refers to the frequency of the sound produced.

A repeated sound produced by reflected sound wave is called ______

• Frequency

• Echo

• Pitch

Answer explanation

A repeated sound produced by reflected sound wave is called an echo, making it the correct choice among the options provided.

Sound is a type of wave that needs a ____________ to travel.

• Compression

• Medium

• Frequency

Answer explanation

Sound is a type of wave that requires a medium to travel, making 'Medium' the correct choice.