WorksheetsLight-Unit 3, Module 2 TEST
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
A purple neon sign emits light waves with which of the following wavelengths?
a)
red and blue wavelengths
b)
purple wavelengths
c)
all wavelengths
2.
On a calm day, you can see your reflection in a pond. On a windy day you cannot, because the surface is rough , resulting in a __________reflection.
a)
diffuse
b)
regular
3.
An apple looks red because it absorbs red light.
a)
True
b)
False
4.
Which statement about the image the person sees is FALSE?
a)
The person sees the image due to reflected rays.
b)
The image is the same size as the object.
c)
The image would appear the same in a convex mirror.
d)
The image is sharp because the mirror is smooth.
5.
Light bends as it passes from air into glass at an angle due to _________.
a)
reflection
b)
refraction
c)
diffusion
6.
A convex lens could also be called a _____ lens.
a)
concave
b)
converging
7.
What is the name of the line drawn perpendicular to the surface where a light ray strikes?
a)
incident ray
b)
reflected ray
c)
normal
8.
Blackout curtains are designed to keep light out of a space. These curtains are made using material that is:
a)
opaque
b)
transparent
c)
translucent
9.
The cells in your eye that help you see in dim conditions are called _____ cells.
a)
cone
b)
rod
10.
Frosted glass is an example of which type of material?
a)
opaque
b)
transparent
c)
transluscent
11.
You can see yourself in a mirror because light _____ off the surface of a mirror.
a)
reflects
b)
refracts
c)
absorbs
12.
The change in direction as light moves from one medium to another is:
a)
reflection
b)
refraction
c)
absorption
13.
The human eye has a lens
a)
True
b)
False
14.
Light transmits through different mediums (solids, liquids, gasses) at the same speed.
a)
True
b)
False
15.
When you mix the primary pigments you get black.
a)
True
b)
False
100 %
