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Y8 Light & Sound

Total questions: 70

Worksheet time: 49mins

Name
Class
Date
1.

Which items are opaque?

a)

A & C

b)

A,C,E, & F

c)

D, E, & F

d)

A & E

2.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
3.
When a rainbow is formed outside naturally, what causes the light to refract?
a)
A. Small raindrops
b)
B. Sunlight rays
c)
C. Tiny mirrors
d)
D. Glass prisms
4.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
5.

Why do we see objects as white?

a)

They absorb all light

b)

They reflect all the colours of visible light

c)

They absorb some light and reflect some light

6.

Another name for light changing direction is ....

a)

Reflaction

b)

Absorbing

c)

Refraction

d)

mirror

7.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
8.
Luminous means...
a)
Gives out its own light
b)
Reflects light from other things
9.

When light passes through a prism the light changes direction and breaks into the visible spectrum. What color refracts the most ?

a)

Red

b)

Yellow

c)

Blue

d)

Violet

10.

___________ is a form of energy that we can see with our eyes.

a)

shadow

b)

light

c)

energy

d)

reflection

11.

What is a band of colour in a rainbow, or from a light passing through a prism?

a)

Spectrum

b)

Space

c)

Prism

d)

Refraction

12.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
13.
White light is made up of _________________ colors.
a)
10
b)
3
c)
7
d)
70
14.
What does light do when it hits an object that it cannot pass through?
a)
It creates a shadow
b)
It passes through anyway
15.

If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?

a)

50⁰

b)

70⁰

c)

45⁰

d)

30⁰

16.
Which color absorbs all light?
a)
White
b)
Black
c)
Orange
d)
Green
17.
The lowest part of the wave is?
a)
crest
b)
trough
c)
rarefaction
d)
wavelength
18.
The highest point on a wave
a)
trough
b)
amplitude
c)
crest
d)
wavelength
19.
When light shines through a prism it creates a ________________
a)
colors
b)
ROY G. BIV
c)
spectrum
d)
electromagnetic wave
20.
Light is a form of 
a)
energy
b)
radiation
c)
reflection
21.
Wax paper or a foggy window is an example of what type of material. 
a)
transparent
b)
translucent
c)
opaque
22.
Light travels in a straight line
a)
True
b)
False
23.

What colors are not in the spectrum?

a)

White

b)

Pink

c)

Red

d)

Violet

24.

What happens when light hits an object?

a)

Some of the light reflects in different directions

(scatters)

b)

Some of the light gets absorbed by the object.

c)

Some of the light reflects back to your eye

d)

ALL of them.

25.
Which objects REFLECT more light?
a)
Shiny objects
b)
Dull objects (not shiny)
26.
A ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. What is the angle of reflection?
a)
A. 0 degrees
b)
B. 50 degrees
c)
C. 90 degrees
d)
D. 25 degrees
27.

Sound moves in a _________.

a)

Transverse wave

b)

Longitudinal wave

c)

circular wave

d)

vacuum

28.
How is sound produced?
a)
By the vibration of particles
b)
By the transfer of particles 
29.
The reflection of sound waves off of a hard surface can create ______.
a)
A wave
b)
An echo 
30.
Soft surfaces _______ sound waves. 
a)
Reflect
b)
Absorb
31.
_______ is the number of waves that pass a certain point at an specific time. 
a)
Frequency 
b)
Pitch
c)
Amplitude
d)
I don't know
32.
Sound waves travel farther through ________ media, like water or steel. 
a)
Dense 
b)
Light
33.
_______ is how high or low we listen/perceive  a sound. 
a)
Pitch
b)
Frequency
c)
Amplitude
d)
I don't know
34.
Sound travels slowest through _________ .
a)
gas
b)
solids
c)
liquids
d)
metal
35.
Sound is a form of? 
a)
energy
b)
pitch
c)
volume
36.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
37.

What is volume?

a)

how high or low a sound is

b)

the loudness or quietness of a sound

c)

the number of vibrations per second

d)

vibrations

38.
Sound is caused by....
a)
molecules
b)
vibrations
c)
people
d)
space
39.
When comparing the two waves that are shown, how would Wave A (green wave) differ than Wave B (black wave)?
a)
Wave A and B have the same amplitude, but wave B (black) has a lower pitch.
b)
Wave A and B have the same amplitude, but Wave A has a lower pitch. 
c)
Wave A and B have the same pitch, but Wave A is a softer sound. 
d)
Wave A and B have the same pitch, but Wave B is a softer sound. 
40.

If the distance represented by the letter A were decreased, how would it change the way the sound was heard?

a)

The sound would be higher.

b)

The sound would be lower.

c)

The sound would be quieter.

d)

The sound would be louder.

41.
The letter "A" in this illustration is called what on a wave?
a)
Amplitude
b)
Frequency
c)
Hertz
d)
Wavelength
42.
What type of wave is pictured?
a)
Transversal
b)
Longitudinal
c)
Surface
d)
Seismic
43.

What is a correct statement about wave 1 and 3?

a)

they are the same

b)

wave 1 has a higher pitch than wave 3

c)

wave 1 has a lower volume than wave 3

d)

wave 1 has a higher volume than wave 3

44.

What is a correct statement about wave 2 and 3?

a)

they are the same

b)

wave 2 has a higher pitch than wave 3

c)

wave 2 has a lower volume than wave 3

d)

wave 2 has a lower pitch than wave 3

45.

What is a correct statement about wave 1 and 2?

a)

they are the same

b)

wave 1 has a higher pitch than wave 2

c)

wave 1 has a higher volume than wave 2

d)

wave 1 has the same pitch as wave 2

46.

To calculate the speed of sound you would need to:

a)

divide the distance the sound travels by the time it takes to arrive

b)

divide the time sound takes to arrive by the distance the sound travels

c)

multiply the distance the sound travels by the time it takes to arrive

d)

take away the distance from the time

47.

Dave watched as his mate put a stick of dynamite in a teddy bear and lit the fuse. Dave was a km away. What happened?

a)

Dave heard the bang, then saw the teddy bear disappear in a puff of stuffing

b)

Dave saw the teddy bear disappear in a puff of stuffing, then heard the bang

c)

Dave saw the teddy bear disappear in a puff of stuffing and heard the bang simultaneously (at the same time)

d)

Dave saw the teddy bear come to life and run away

48.

A ____________________ is a longitudinal wave that is caused by vibrations and travels through a medium.

a)

light wave

b)

sound wave

c)

microwave

d)

water wave

49.
Which mammal uses sonar to detect objects in the dark?
a)
Mouse
b)
Dog
c)
Bat
50.
You cannot hear ultrasound because it is:
a)
too loud
b)
too quiet
c)
high frequency
d)
low frequency
51.
 The sonar that boats use for ultrasound is to determine the distance that an object is underwater.
a)
True
b)
False
52.

In a ________________________ wave, the particles vibrate in the same direction that the wave travels, or parallel to the wave.

a)

light wave

b)

microwave

c)

water wave

d)

longitudinal wave

53.

What happens to the eardrum when sound hits, causing transmission of sound to the inner ear?

a)

it opens

b)

it grows hair

c)

it refracts the sound

d)

it vibrates

54.

What does the Auditory nerve do?

a)

Carries the message to the brain

b)

Carries the message to the Semi-Circular canal

c)

Send the message to the Eustachian tube

55.

What is this?

a)

Pinna

b)

Hearing Nerve

c)

Cochlea

d)

Ear Drum

e)

Anvil

56.

What can you use to see all the different colors in white light?

a)

A flashlight

b)

A shadow

c)

A camera

d)

A prism

57.

What color is an object that absorbs all the colors in the light spectrum?

a)

A rainbow

b)

White

c)

Black

d)

Invisible

58.

A leaf is green. What does this tell you about the light that is being absorbed?

a)

The light is a UV ray.

b)

The light is not a part of the light spectrum.

c)

All colors are reflected except green.

d)

All colors are absorbed except green

59.

What is the angle of reflection equal to?

a)

The angle of refraction

b)

The angle of incidence

c)

The angle of absorption

d)

The angle of light

60.

What is the angle of incidence?

a)

The angle at which light bends in water.

b)

The angle at which light hits a surface.

c)

The angle at which light is absorbed by an object.

d)

The angle at which light bounces off a surface.

61.

Which part is #4?

a)

pupil

b)

iris

c)

cornea

d)

lens

62.

Which part is #7?

a)

sclera

b)

optic nerve

c)

cornea

d)

retina

63.

What does the optic nerve do?

a)

transmit impulses from retina to brain

b)

helps the eye focus

c)

receives light and sends it to brain

d)

transmits light rays to retina

64.

The picture shows which type of reflection?

a)

Specular

b)

X-ray

c)

Diffuse

d)

Normal

65.

The angle between the reflected ray and the normal (labelled Y on the diagram).

a)

Angle of Incidence

b)

Angle of Reflection

c)

Angle of Normal

d)

Angle of Light

66.

An imaginary line that is drawn at a right angle (90 degrees) to a mirror (Green line)

a)

Reflection Ray

b)

Normal

c)

Incidence Ray

d)

Light Ray

67.

The picture shows which type of reflection?

a)

Diffuse

b)

X-ray

c)

Normal

d)

Specular

68.

If the angle of incidence in the diagram is 80°, the angle of reflection will be:

a)

10°

b)

100°

c)

90°

d)

80°

69.

Given that the angle of incidence = 30 degrees


Which is the correct diagam?

a)

A

b)

B

c)

C

d)

D

70.

Light always travels in a

a)

straight line

b)

wavy line

c)

curved line

d)

zig-zag line

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