Name: 
 

Unit D Self Quiz


Part A Modified True/False
Indicate whether the sentence or statement is true or false.  If false, change the identified word or phrase to make the sentence or statement true.
 

 1. 
Opaque objects absorb or reflect all light.

 

 2. 
The farthest point in a wave above the resting position is called the trough.

 

 3. 
The angle of incidence and the angle of reflection always add up to 90°.

 

 4. 
The reflected image in a plane mirror appears twice as large as the mirror.

 

 5. 
The blind spot is located on the cornea.

 

 6. 
Laser surgery techniques modify the shape of the lens.

 

Part B Matching
 
 
Match the electromagnetic waves to the characteristics below.
a.
 ultraviolet
d.
 X-rays
b.
 infrared
e.
 radio waves
c.
 visible light
 

 7. 

 photographing internal parts of the body
 

 8. 

 causes suntans and sunburns
 

 9. 

 television waves
 

 10. 

 remote controls
 

 11. 

 splits into coloured bands
 

Part C Completion
Complete each sentence or statement.
 

 12. 
The result of a vibration that transfers energy from one location to another is a ____________________.
 

 

 13. 
The lowest point of a wave is the ____________________.
 

 

 14. 
When light travels from air into other materials it changes direction or ____________________.
 

 

 15. 
The diaphragm of a camera and the ____________________ of the eye control the amount of light.
 

 

Part D Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 16. 
The process of emitting light for a short time after receiving energy from another source is called
a.
 bioluminescence
c.
 incandescence
b.
 phosphorescence
d.
 fluorescence
 

 17. 
All electromagnetic radiation
a.
 can travel through a vacuum
c.
 is made of light
b.
 is visible to the human eye
d.
 has the same amount of energy
 
 
Figure 1
nar001-1.jpg
 

 18. 
In Figure 1, which number indicates the crest?
a.
 1
c.
 3
b.
 2
d.
 4
 

 19. 
In Figure 1, which number indicates the wavelength?
a.
 1
c.
 3
b.
 2
d.
 4
 

 20. 
In Figure 1, which number indicates the trough?
a.
 1
c.
 3
b.
 2
d.
 4
 

 21. 
In Figure 1, which number indicates the amplitude?
a.
 1
c.
 3
b.
 2
d.
 4
 

 22. 
The line through the centre of the mirror that includes the principal focus is called the
a.
 principal axis
c.
 focal length
b.
 principal focus
d.
 object distance
 

 23. 
Convex lenses are often called __________ lenses.
a.
 reflecting
c.
 converging
b.
 refracting
d.
 diverging
 
 
Figure 2
nar002-1.jpg
 

 24. 
Figure 2 indicates
a.
 hyperopia
c.
 astigmatism
b.
 myopia
d.
 presbyopia
 

Part E Short Answer
 

 25. 
Explain the difference between luminous and nonluminous objects. Give one example of each.
 

 26. 
Explain why it is cooler to wear light or white coloured clothes during hot weather and warmer to wear dark coloured clothes during cold weather.
 

 27. 
Explain the relationship between the wavelength, frequency and energy of a wave. Give an example.
 

 28. 
How is a reflected ray different than a refracted ray?
 

 29. 
Using a diagram, demonstrate why the image formed on the retina is inverted. Label the object, lens, retina and image. Use arrows to indicate the direction of light.
 

 30. 
Explain how the optic nerve and the blind spot are related.
 



 
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