Yr 9 Light & Sound Revision Quiz 2

What form of energy must travel through matter (solid, liquid, gas)

• light energy

• sound energy

• both light and sound energy

• no form of energy can travel through matter

What causes the colors of a rainbow to be seen when light passes through raindrops?

• the light is REFLECTED (bounced) off the raindrops

• the light is ABSORBED (soaked up) by the raindrops

• the light is REFRACTED (bent) by the raindrops

• the light travels in a straight line through the raindrops

Sound travels fastest through this type of matter.

• solid

• liquid

• gas

• water

__________________ means to bounce back light.

• reflect

• refract

• absorb

• echo

___________________ means sound reflecting off a surface or other material.

• reflect

• refract

• abosorb

• echo

If a tree falls in a forest and no one is there to hear it, does it make a sound?

• No, because the molecules vibrating will not reach our ears.

• Yes, because sound is caused by vibrations. A tree falling would make a BIG vibration and cause sound waves to travel through the forest.

Is there sound in space?

• No, because sound needs matter to travel through, and there is no matter in outer space.

• Yes, because outer space has an atmosphere like Earth.

Is there light in outer space?

• No, because light need matter to travel through.

• Yes, because light doesn't need matter to travel through.

Which diagram of a sound wave represents the sound with the highest pitch?

• A
• B
• C
• D

Tags

NGSS.MS-PS4-1

What happens to a sound if the frequency of the vibrations increases?

• the volume decreases
• the pitch increases
• the sound echoes
• the sound gets louder