Sound 3.0

What does pitch depend on?

• amplitude

• intensity

• frequency

• volume of sound

Which of the following would you hear as a low pitched sound?

• sound wave with a frequency of 50 Hz

• sound wave with frequency of 10,000 Hz

• sound wave with an intensity of 10 dB

• sound wave with an intensity of 100 dB

Sound travels fastest through which of these materials?

• A type of gas, like helium

• A metal such as iron

• Empty space

• Water

A student holds two vibrating objects. Object A is vibrating faster than object B. Which statement is true?

• A is louder than B

• B is louder than A

• A will have a higher pitch than B

• B will have a higher pitch than A

The higher the amplitude of a sound wave, the ____ the sound.

• louder

• softer

The ______ of a sound depends on the medium through which it's moving.

• pitch

• speed

• vibration

• sound

Sound waves that are above the normal range for humans to hear. Also used by doctors to see inside the human body.

• ultrasound

• loud music

• noise

• infrasound

Sound waves CANNOT travel through which of these:

• Paper

• Air

• Outer space

• water

What wave produces the highest frequency?

• 1

• 2

• 3

• 4

What is an echo?

• a sound absorbed by materials around it

• a sound changing in frequency

• a sound traveling to a listener far away

• a sound that repeats due to reflection of sound waves