6H Brain Pop Sound and Waves Quiz

How are ocean waves different from sound waves?

• Ocean waves are transverse waves, sound waves are longitudinal waves.

• Ocean waves are longitudinal waves, sound waves are transverse waves.

• Ocean waves are electromagnetic waves, sound waves are mechanical waves.

• Ocean waves are mechanical waves, sound waves are electromagnetic waves.

What are you doing when you're making sound?

• Causing photons to travel.

• Causing air molecules to vibrate.

• Causing electromagnetic waves to radiate.

• Causing air pressure to drop.

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What is compression?

• When air molecules move apart from one another.

• When air molecules collide with one another.

• When air molecules become packed tightly together.

• When air molecules move around freely.

A sound wave of over 20,000 cycles per second is inaudible to humans. What does "inaudible" mean?

• Loud

• Shrill

• Deep

• Unable to be heard

What would a wave with a low amplitude sound like?

• It would sound quiet.

• It would sound loud.

• It would sound high-pitched.

• It would sound deep.

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What is the relationship between frequency and sound?

• Frequency affects a sound's volume.

• Frequency affects a sound's amplitude.

• Frequency affects a sound's loudness.

• Frequency affects a sound's pitch.

Where would sound travel the slowest?

• In New York City

• In the pine forests of Georgia

• At the North Pole

• At the equator

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To break the sound barrier, an airplane must travel faster than the speed of sound. Approximately how fast does an airplane have to go to do this?

• 344 kilometers per hour

• 344 meters per second

• 344 centimeters per minute

• 344 miles per hour

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Which of these does sound travel fastest through?

• Steel

• Water

• Air

• Rock

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