Sound 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.

What is compression?

• When air molecules move apart from one another.
• When air molecules collide with each other.
• 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?

• New York City
• In the pine forests 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?

• A brick wall
• A robot
• A glacier
• A stack of blankets