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WorksheetsLight and Optics!!
Total questions: 17
Worksheet time: 9mins
Name
Class
Date
1.
An electromagnetic wave is a disturbance that transfers energy through a field. In this sense, a disturbance is the same as a
a)
confusion
b)
magnification
c)
vibration
d)
conflict
2.
Unlike mechanical waves, EM waves can travel through
a)
a vacuum
b)
water
c)
the ground
d)
air
3.
A light year is a measure of
a)
time
b)
distance
c)
speed
d)
wavelength
4.
The sun and a light bulb both produce light theough
a)
bioluminescence
b)
incandescence
c)
luminescence
d)
polarization
5.
Which of the following types of light bulb converts ultraviolet waves into visible light waves?
a)
incandescent
b)
fluorescent
c)
halogen
d)
tungsten
6.
An object seen through translucent material appears less clear than one seen through transparent material because the translucent material
a)
transmits none of the light coming form the object
b)
reflects all the light coming from the object
c)
transmits all the light coming from the object
d)
diffuses some light coming form the object
7.
An object appears red because it
a)
reflects light waves of all colors
b)
reflects light waves of red
c)
absorbs light waves of red
d)
transmits light waves of all colors
8.
Primary colors of light can combine to make
a)
black light
b)
white light
c)
primary pigments
d)
ultraviolet light
9.
Which of the technologies listed have the highest frequencies?
a)
AM radio
b)
CB radio
c)
FM radio
d)
TV channels 2-6
10.
What shape is a mirror that reflects parallel light rays toward a focal point?
a)
convex
b)
flat
c)
concave
d)
regular
11.
According to the Law of reflection, a light ray striking a mirrow
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror a the same angle it hits.
12.
Lasers do work similar to that of human vision when they are used to
a)
perform surgery
b)
send phone signals over optical cable
c)
scan bar codes at the grocery store
d)
change the shape of molecules
13.
Reflecting telescopes focus images using
a)
several mirrors
b)
several lenses
c)
both mirrors and lenses
d)
either a mirror or a lens, but not both
14.
Nearsighted vision is corrected when lenses
a)
reflect light away from the eye
b)
allow light rays to focus on the retina
c)
allow light to fouca slightly past the retina
d)
help light rays relfect regularly
15.
On AM broadcasts, what remains constant?
a)
the
amplitude
b)
the
music
c)
the
frequency of the wave
d)
the
loudness of the wave
16.
FM signals travel as changes in
a)
the
speed of the wave
b)
the
amplitude of the waves
c)
the
frequency of the wave
d)
the
loudness of the wave
17.
What kind of waves do cellular telephones use to transmit and receive signals?
a)
gamma rays
b)
microwaves
c)
ultraviolet rays
d)
infrared rays
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