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Light & Sound

Total questions: 47

Worksheet time: 29mins

Name
Class
Date
1.
Which diagram of a sound wave represents the sound with the highest pitch?
a)
A
b)
B
c)
C
d)
D
2.
Which way of communicating will NOT work for astronauts in outer space?
a)
ringing a bell
b)
flashing a light
c)
using a radio
d)
waving a hand
3.
Which material does sound travel through the fastest?
a)
air 
b)
outer space
c)
water
d)
brick
4.
What causes sound?
a)
something vibrating
b)
a part of a car
c)
an object moving through the air
d)
light energy
5.
What happens to a sound if the frequency of the vibrations increases?
a)
the volume decreases
b)
the pitch increases
c)
the sound echoes
d)
the sound gets louder
6.
In a sound wave, the area where molecules have been pressed together is a...
a)
Compression
b)
Rarefaction
c)
Wavelength
7.
What is determined by the amount of energy in a sound wave? (volume)
a)
Amplitude
b)
Pitch
8.
In a sound wave, which area has greater air pressure?
a)
Wavelength
b)
Rarefaction
c)
Compression
9.
This picture (B) shows light moving as a...
a)
Transverse Wave
b)
Ocean Wave
c)
Compression Wave
d)
Slinky Wave
10.
In a sound wave, the area where there are fewer molecules and they are spread out is a...
a)
Compression
b)
Rarefaction
11.
Sound travels fastest through solids, because the molecules are ........
a)
Spread Very Far Apart
b)
Packed Tightly Together
12.
Sound is a form of .............
a)
Matter
b)
Electricity
c)
Energy
13.
During a thunderstorm, you see lightning before you hear thunder.  This is because .......
a)
Sound and Light travel at the same speed
b)
Sound is faster than Light
c)
Light is faster than Sound
14.

The distance between one area of compression and the next area of compression is the wave's

a)

amplitude

b)

wavelength

c)

frequency

d)

speed

15.
Matter that carries sound waves is called a _________
a)
low
b)
high
c)
medium
d)
surface
16.

What is absorption?

a)

Loudness or quietness

b)

Highness or deepness of sound

c)

Reflecting sound

d)

To soak in

17.

What does reflect mean?

a)

Moving back and forth quickly

b)

Bouncing sound

c)

Loudness or quietness

d)

Speed of vibration

18.

•A boat sends a pulse signal 1600m below the sea surface. If sound travels at 400m/s, how long will it take for the signal to come back to the boat?

a)

4 sec

b)

400 sec

c)

4 min

d)

400 min

19.
Allows little to no light through.
a)
Transparent
b)
Translucent
c)
Opal
d)
Opaque
20.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
21.
Allows most light through
a)
eflection
b)
Refraction
c)
Translucent
d)
Transparent
22.

All light has a SOURCE, or something it comes from. What do we call the object that emits light?

a)

nuclear

b)

luminous

c)

reflect

d)

proton

23.
The term for any wave that hits a surface and bounces off
a)
Transparent
b)
Translucent
c)
Refraction
d)
Reflection
24.

When light strikes an object with a rough surface, photons bounce off at random angles.

a)

Occer

b)

diffuse

c)

diffuse reflection

d)

reflection

25.
The ray of light that strikes a reflecting surface is called ________.
a)
incident ray
b)
reflected ray
c)
normal ray
d)
none of the above
26.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
27.
The angle produced as a source of light bounces off a reflecting surface is called ______.
a)
angle of crookedness
b)
angle of reflection
c)
angle of incidence
d)
angle of bounce
28.
What is the line MN called in the given diagram
                               
a)
incident ray
b)
reflected ray
c)
reflecting surface
d)
normal
29.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

30.

What is the best explanation for Mickey seeing himself in the mirror?

a)

refraction

b)

absorbed

c)

reflection

d)

flipped

31.

What do we call a material that light can travel through?

a)

air

b)

water

c)

medium

d)

pathway

32.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
33.
Swimming pools and the ocean look shallower than they really are due to:
a)
reflection 
b)
dispersion
c)
refraction
d)
total internal reflection
34.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
35.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
36.
When light passes at an angle to the normal from one material into another material in which its speed is higher 
a)
it is bent toward the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
37.
When light passes at an angle to the normal from one material into another material in which its speed is lower
a)
it is bent towards the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
38.
Larger the refractive index, the _____ the wave travels in the medium.
a)
faster
b)
slower
39.
If the angle of incidence increases, the angle of refraction ________.
a)
Increases
b)
Decreases
40.
Curve in
a)
Converse
b)
Convex
c)
Convection
d)
Concave
41.
Curve Out
a)
Converse
b)
Concave
c)
Convex
d)
Convection
42.

Which lens represents the path light takes through a concave lens?

a)
b)
c)
d)
43.

Which figure represents the path light takes through a convex lens?

a)
b)
c)
d)
44.

What is the correct order of the visible light spectrum starting with the longer wavelength?

a)

Red, yellow, orange, blue, violet, indigo

b)

Violet, indigo, blue, green, yellow, orange, red

c)

Green, yellow, blue, indigo, red, orange

d)

Red, orange, yellow, green, blue, indigo, violet

45.
What is an example of a wave with a long wavelength and low frequency?
a)
Gamma rays
b)
Infrared
c)
Radio
d)
Visible light
46.
An example of a wave with a short wavelength, high frequency, and high energy is a 
a)
X-ray
b)
Microwave
c)
Visible light wave
d)
Infrared wave
47.

Which color has the longest wavelength?

a)

Yellow

b)

Red

c)

Green

d)

Purple

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