BrainPOP! Sound

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 rediate

• Causing air pressure to drop.

What is compression?

• When air molecules move apart from 1 another.

• When air molecules collide with 1 another.

• When air molecules become packed tightly together

• When air molecules move around freely.

A Sound wave of over 20,000 Cycles per Seconds 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 tinny.

• It would sound deep.

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 Forest of GEORGIA

• At the NORTH POLE

• At the Equator

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

Which of these does sound travel fastest through?

• Steel

• Water

• Air

• Rock

Which of these would ABSORB the most Sound?

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