PROPERTIES OF SOUND

Sound cannot travel through which of the following?

• Solid

• Liquid

• Gas

• Vacuum

The pitch of a sound depends directly on

• Frequency

• Amplitude

• Wavelength

• Velocity

The loudness of a sound depends directly on

• Frequency

• Amplitude

• Wavelength

• Velocity

Which of the following can humans NOT hear?

• 2 Hz

• 20 Hz

• 200 Hz

• 2,000 Hz

Subsonic vibrations have a frequency below

• 20 Hz

• 200 Hz

• 2,000 Hz

• 20,000 Hz

Ultrasonic vibrations have a frequency above

• 20 Hz

• 200 Hz

• 2,000 Hz

• 20,000 Hz

Sound travels fastest in

• Solids

• Liquids

• Gases

• A Vacuum

Sound travels slowest in

• Solids

• Liquids

• Gases

• A Vacuum

A flash of lightning is seen and the thunder is heard 6 seconds later. How far away, in km, was the lightning if the speed of sound in air is 333 m/s?

• 1

• 2

• 3

• 4

After a first lightning flash is seen the thunder is heard 6 seconds later. After the second lightning flash the thunder is heard 5 seconds later. After the third lightning flash the thunder is heard 4 seconds later. Relative to your position, it can be said that the storm clouds are

• Getting Closer

• Moving Away

• Not getting closer or moving away

• (More information is needed)