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Light and Sound waves PS7.2

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.

What type of wave interaction is being described - The road becomes hot on a summer day due to matter taking in light waves.

a)

absorption

b)

reflection

c)

refraction

d)

scattering

2.

What type of wave interaction has to take place for an object to appear opaque?

a)

Light waves are reflected

b)

Light waves are refracted

c)

Light waves are diffracted

d)

Light waves are transmitted

3.

For an object to appear transparent, what type of wave interaction must take place?

a)

Light waves are transmitted

b)

Light waves are absorbed

c)

Light waves are diffracted

d)

Light waves are reflected

4.

How are we able to perceive an object as being the color white?

a)

All colors of visible light are absorbed by an object and then reflected into our eye.

b)

All colors of visible light are reflected off an object and then to our eye.

c)

All colors of visible light are absorbed by an object and no light is being reflected into our eye.

5.

How are we able to perceive an object as being the color black?

a)

All colors of visible light are absorbed by an object and then reflected into our eye.

b)

All colors of visible light are reflected off an object and then to our eye.

c)

All colors of visible light are absorbed by an object and no light is being reflected into our eye.

6.

Ray C represents __.

a)

reflection

b)

refraction

c)

transmission

d)

absorption

7.

Ray B represents __.

a)

reflection

b)

refraction

c)

transmission

d)

absorption

8.

If you see an object as orange,

a)

it is absorbing orange light and reflecting all other colors.

b)

it is reflecting all colors.

c)

it is absorbing all colors.

d)

it is reflecting orange light and absorbing all other colors.

9.

A student placed a pencil in a cup of water. The pencil appears broken because light

a)

always travels in a straight line.

b)

bends when it passes through water.

c)

makes the water in the glass evaporate.

d)

reflects the pencil on the water's surface.

10.

A mirror that gives a wider view field making bigger objects appear to be smaller than their original form.

a)

concave

b)

convex

11.

This ray diagram is for which mirror?

a)

concave

b)

convex

c)

plane

d)

window

12.
The speed of a sound wave depends on
a)
the frequency
b)
the medium
c)
both air temperature and medium
d)
the air temperature
13.

People often put noise-cancelling earmuffs on babies when they bring them to loud places. This is to help protect their ears. How do you think this works? Select TWO answers.

a)

Sound waves are striking the earmuffs and bouncing off of them.

b)

Sound waves are striking the earmuffs, going into them, but not passing through them.

c)

Sound waves are striking earmuffs and going through them.

d)

Sound waves are striking the earmuffs and being bent as they pass through.

14.
What type of wave behavior is pictured above?
a)
Refraction
b)
Reflection
c)
Absorption
d)
Diffraction
15.
When a sound wave experiences reflection, we hear
a)
a louder sound
b)
an echo
c)
a quieter sound
d)
nothing