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UWCSEA G8 light quiz

Total questions: 50

Worksheet time: 34mins

Name
Class
Date
1.
Which images 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.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
4.
Another name for light bending is ....
a)
Reflaction
b)
Absorbing
c)
Refraction
d)
mirror
5.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
6.
Opaque means...
a)
No light passes through it
b)
All light passes through it
c)
Some light passes through it
7.
___________ is a from of energy that we can see with our eyes.
a)
shadow
b)
light
c)
energy
d)
reflection 
8.
Which term means to bounce off the surface of something?
a)
Refract
b)
Absorb
c)
Reflect
d)
prism
9.

What word describes what we see when light is split into its constituent colours?

a)

Visible light spectrum

b)

Space

c)

Prism

d)

Refraction

10.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
11.
The term for any wave that hits a surface and bounces off
a)
Transparent
b)
Translucent
c)
Refraction
d)
Reflection
12.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
13.

Allows most light to be transmitted in a straight line

a)

eflection

b)

Refraction

c)

Translucent

d)

Transparent

14.
White light is made up of _________________ colors.
a)
10
b)
3
c)
7
d)
70
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.
In a dim room, your pupils will _______________________
a)
dilate
b)
shrink
c)
change color
d)
not change color
18.
Wax paper or a foggy window is an example of what type of material. 
a)
transparent
b)
translucent
c)
opaque
19.
What is the short, thick nerve through which signals travel to the brain from the eye?
a)
Lens
b)
Retina
c)
Optic Nerve
d)
Cornea
20.
Visible light is ...
a)
Light bulb
b)
sun
c)
light that we can see with our natural eye
d)
fire
21.
____________________ is the hole through which light enters the eye.
a)
Cornea
b)
Iris
c)
Retina
d)
Pupil
22.
What does refract mean?
a)
To shrink
b)
To bend
c)
To widen
d)
To enlarge
23.
Which of these is an example of visible light?
a)
X-rays
b)
rainbow
c)
microwaves
d)
radio waves
24.
What do you get if you combine all of the colors in visible light?
a)
bright light
b)
white light
c)
brilliant light
d)
neon light
25.
What happens when light hits an object you can see?
a)
The light turns corners.
b)
The light curves around the object.
c)
The object reflects the light.
d)
The light and the object do not form a shadow.
26.

Why does the reflection of the trees in the lake appear blurry?

a)

The light that hits the water is reflected in different directions.

b)

The light that hits the water is reflected at different speeds.

c)

The light is reflected from the uneven bottom of the lake.

d)

The light that is reflected from the trees is refracted by the lake.

27.
What is a property of a transparent object?
a)
Almost all of the light rays that reach it are scattered.
b)
Almost all of the light rays that reach it are absorbed.
c)
Almost all of the light rays that reach it are reflected.
d)
Almost all of the light rays that reach it pass through it.
28.
Light travels
a)
around corners
b)
in a straight line
29.

What occurs when light interacts with a glass prism?

a)

reflection

b)

refraction

c)

absorption

30.
lenses
a)
reflect
b)
refract
c)
absorb
31.

What word describes what happens when light strikes an object with a rough surface it bounces off at random angles.

a)

Occer

b)

Scope

c)

Scattering

d)

Scattegories

32.
Which of these describes how light travels through an empty space?
a)
It travels straight but may change direction to avoid objects.
b)
It changes direction often even if there are no objects. 
c)
It comes to a stop after it travels a certain distance. 
d)
It travels in a straight line without stopping. 
33.
Which material is NOT translucent?
a)
Brick
b)
Tissue paper
c)
Thin sheet of plastic
34.
What three things may happen to light that strikes an object? 
a)
The light may be reflected, transmitted or absorbed.
b)
The light may be reflected and refracted.
c)
The light may be absorbed and transmitted.
35.
An actorś red shirt and blue pants both appear black. What color is the stage light shining on the actor?
a)
Blue 
b)
Red
c)
Magenta
d)
Green
36.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
37.

Light enters this part of the eye first, refracting as it does so

a)

Retina

b)

Cornea

c)

Lens

d)

Cones

38.
Objects that reflect ALL colors will appear _____?
a)
Black
b)
White
c)
Gray
d)
Multi-colored
39.
Objects that ABSORB all colors of light will appear _______.
a)
white
b)
black
c)
multi-colored
d)
gray
40.
If you are using a green color filter, what color will you only see?
a)
blue
b)
green
c)
white
d)
red
41.
If you are using a red color filter, blue objects will appear what color?
a)
purple
b)
blue
c)
red
d)
black
42.
What is the purpose of a model in science?
a)
To make science look cool.
b)
To explain a phenomena or process.
c)
To make a topic interesting.
d)
To explain vocabulary.
43.
Which is true of a green grape?
a)
It absorbs green light.
b)
It absorbs white light.
c)
It reflects green light.
d)
It reflects white light.
44.
What allows us to see any object:
a)
light from the Sun striking the retina in our eyes
b)
Light being absorbed by objects around us
c)
Light wawes interferring with vibrations from nearby objects
d)
Light reflecting off the surface of objects and into our eyes
45.
Red objects appear 'red' because:
a)
red objects are made from red materials
b)
red objects absorb red light
c)
red objects absorb all other colour except red light
d)
red objects don't reflect any light
46.

Computer and TV screens have pixels. What are they?

a)

Tiny mirrors which reflect light from the surrounding area

b)

A film making company who often work with Disney

c)

A tiny area of illumination that produces coloured light on a display screen

d)

A tiny spot on the TV which is coloured red, blue or green

47.

White light is shone through a magenta and then a yellow filter, what colour is transmitted?

a)

Blue

b)

Yellow

c)

Red

d)

None

48.

How would you explain this picture? The object looks higher up because...

a)

...light has been refracted as it goes into the glass.

b)

...light is refracted as it leaves the glass of water, and the eyes assume it has travelled in a straight line

c)

...light is reflected at the surface and the eye assumes its travelled in a straight line

d)

...the coin has sunk down because the water is transparent

49.

When light travels from a transparent medium which is less dense to one which is more dense...

a)

It continues in a straight line

b)

It bends away from the normal

c)

It reflects

d)

It bends towards the normal

50.

What kind of object is this?

a)

Translucent

b)

Opaque

c)

Transparent

d)

Dull