Sound: Its Nature and Properties

What property of sound describes your awareness of the energy of sound?

• loudness

• intensity

• pitch

• elasticity

What term describes how much matter or mass there is in a given volume?

• stiffness

• density

• temperature

• diffraction

As a sound wave travels, its intensity decreases because...

• the sound waves spread out as they travel away from the source.

• there is other noise.

• the temperature changes.

• we are less aware of it.

If you increase the temperature of a liquid or gas, a sound wave will travel...

• more slowly.

• at the same speed as before the temperature increased.

• faster.

Which speaker cone will vibrate faster?

• The bottom

• the top.

• They will vibrate at the same speed.

Which speaker cone produces the sound with a lower pitch and longer wavelength?

• The bottom cone

• the top cone

• They will both be the same.

Sound does not travel through

• water

• steek rails

• wooden doors

• outer space

Sound travels ____________ in air than in water.

• faster

• slower

• the same speed

• happily

Loudness is how the ear perceives...

• intensity

• density

• speed

• frequency

Thunder and lightning occur at the same time. Why do you think you usually see lightning before you hear thunder?

• The lightning is closer.

• Sound travels faster than light.

• Light travels faster than sound.

• The thunder is closer.