Light and Sound

What happens to light that is absorbed by an object?

• It is bent.

• It bounces back.

• It separates into colors.

• It does not pass through.

Why is there no sound in space?

• It is too far from Earth.

• The temperature is too cold.

• Forces in space are too weak.

• There are no materials to vibrate.

Which object separates light into a spectrum?

• a bulb

• a glass

• a mirror

• a prism

Tags

NGSS.MS-PS4-2

How can you increase the brightness of a light source?

• by decreasing its intensity

• by moving it closer to you

• by passing it through glass

• by blocking some of its light

During a fireworks show, a family sees the spray of sparkles from a firework, and a moment later, they hear the pop. Which of these best explains why the pop and spray do not seem to occur at the same time?

• Light and sound travel through air.

• Sounds travels through a vacuum.

• Sound travels slower than light.

• Light and sound travel at the same speed.

Why would a cymbal stop making noise if you put your hand on it after it is struck?

• it would be broken

• the pitch would be too low to hear

• other instruments would be playing

• it would stop vibrating so the sound would stop

Tags

NGSS.MS-PS4-2

High pitches are produced by objects vibrating _______________.

• quickly

• slowly

Because light travels faster than sound, you see ​ (a)   before you hear thunder

• lightning

• rainbow

• fireworks

Lightning heats the air so much that the air expands. The sound created by the sudden expansion and contraction is called _______________________.

• expansion

• thunder

• radar

• lightning

Tags

NGSS.MS-ESS2-5

Which is the best description of a sound wave when the pitch of the sound is very high?

• It has a low frequency

• It has a high frequency

• It has no wavelength

• It has no frequency