WorksheetsLenses
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Name the primary colour of light
a)
red, green, blue
b)
red, black, yellow
c)
blue, green, yellow
2.
Why does your pupil increase in size when you enter a dark room?
a)
To protect the eye
b)
to allow more light to enter the eye
c)
to allow less light to enter the eye
3.
Why does your pupil increase in size when you enter a dark room?
a)
To protect the eye
b)
to allow more light to enter the eye
c)
to allow less light to enter the eye
4.
Why does your pupil increase in size when you enter a dark room?
a)
To allow more light to enter the eye
b)
To allow less light to enter the eye
c)
To protect the eye
5.
What is the function of the pupil?
a)
Controls the amount of light entering the pupil
b)
Focus the light
c)
Protects the eye
6.
what is the function of the lens?
a)
To protect the eye
b)
To change the shape of the eye
c)
To focus light
7.
The Cones are:
a)
Sensitive to dim light
b)
Sensitive to bright light and colour
c)
There to control how much light enters the eye
8.
The retina has
a)
Rod cells that detect primary colours (red, green and blue).
b)
Cone cells that detect primary colours (red, green and blue).
c)
rod cells but no cone cells.
9.
The rods are
a)
Sensitive to dim light
b)
Sensitive to bright light
c)
Sensitive to all types of light
10.
The Cones are:
a)
Sensitive to dim light
b)
Sensitive to bright light and colour
c)
There to control how much light enters the eye
11.
What is an aperture?
a)
Allows more light to enter the camera
b)
Protects the camera
c)
Focuses light
12.
What is the function of the iris?
a)
Change the shape of the lens
b)
Change the shape of the pupil
c)
Protect the lens
13.
What is refraction?
a)
Where light changes direction
b)
When light bounces off a surface
c)
When light is absorbed
14.
What is reflection?
a)
Where light changes direction
b)
When light bounces off a surface
c)
When light is absorbed
15.
What is 'the normal'?
a)
A line at a right angle from the incident ray
b)
Where the mirror is located
c)
The angle of which light changes direction
16.
What is the angle of refraction?
a)
The angle which light bounces of an object?
b)
The angle which light changes direction
c)
The angle of which light enters an object
17.
What is the angle of incidence
a)
The angle which light bounces of an object?
b)
The angle which light changes
c)
The angle of which light enters an object
18.
When light travels from air to water it....
a)
Speeds up
b)
Slows down
c)
stays the same speed
19.
This is because...
a)
water has a higher density
b)
water has a lower density
c)
water has the same density
20.
what is the difference between convergent and divergent lens?
a)
convergent - focus light together, divergent - refracts light into different directions
b)
convergent - focus light into different directions, divergent - refracts light together
c)
no difference
100 %
