Sound and Light

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Tags

NGSS.MS-PS4-2

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

Tags

NGSS.MS-PS4-2

Sound is caused by....

• molecules
• vibrations
• people
• space

Bending of waves around an object (such as through a doorway)

• sound
• diffract
• pitch
• volume

Tags

NGSS.MS-PS4-2

When the sound source moves, the frequency changes
ex. police car siren sounding lower pitch after the car passes

• pitch
• frequency
• Doppler Effect
• medium

Tags

NGSS.HS-PS4-1

Our perception of the frequency of a sound wave.

• Volume

• Brightness

• Pitch

• Color

Our perception of the intensity of a sound wave.

• Volume

• Brightness

• Pitch

• Color

Our perception of the frequency of light

• Volume

• Brightness

• Pitch

• Color

This is how humans perceive the intensity of light.

• Loudness

• Brightness

• Pitch

• Color

The ear canal...

• directs sound from the outer to middle ear

• directs sound from the middle to inner ear

• collects and shapes sound