CP Ch11.3 Sound Waves

How are sound waves created?

• By vibrating objects

• By heating objects

• By illuminating objects

• By rotating objects

In what substances can sound travel?

• Only air

• Only water

• Any elastic substance

• Only solids

What does the loudspeaker of sound-producing systems convert electrical signals into?

• Light waves

• Heat waves

• Sound waves

• Radio waves

How is sound produced?

• By light waves

• By water molecules

• By vibrations in air molecules

• By magnetic fields

What factors does the speed of sound depend on?

• Temperature and humidity

• Temperature, humidity, and the medium it travels through

• Medium it travels through

• Temperature and pressure

What is the range of pitches that humans can hear?

• 10 to 10,000 hertz

• 20 to 20,000 hertz

• 30 to 30,000 hertz

• 40 to 40,000 hertz

What is pitch in relation to sound?

• Volume

• Timbre

• Frequency

• Amplitude