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WorksheetsUnit 6 Light Review
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
What is the acronym for the colors of the rainbow?
a)
RIY V BOG
b)
ROY G BIV
c)
BRO G YIV
d)
VIB G ROY
2.
What is the speed of light in air?
a)
3 million m/s
b)
30000000 m/s
c)
300 m/s
d)
300 million m/s
3.
Theory proposed by Albert Einstein that electromagnetic energy is released in discrete packets of energy (now called photons) that act like waves.
a)
Wave-particle Theory
b)
super awesome theory about light
c)
de Broglie Theory
d)
Dual Nature of Light Theory
4.
A __________ is a tiny "packet" of energy released when an electron returns to a lower energy level.
a)
photon
b)
proton
c)
gluon
d)
muon
5.
On a sunny day, white sand on a beach seems to glow with light. What process explains why the sand is so bright?
a)
illumination
b)
fluorescence
c)
bioluminescence
d)
incandescence
6.
The production of light by living things as a result of chemical reactions is called...
a)
illumination
b)
fluorescence
c)
bioluminescence
d)
incandescence
7.
How does an incandescent light bulb produce visible light?
a)
The bulb’s filament gets so hot that it glows.
b)
Gas inside the bulb gives off visible light.
c)
Electricity excites neon electrons in the bulb.
d)
two of the choices
8.
What happens to light that strikes transparent matter?
a)
It is reflected.
b)
It is absorbed
c)
It is transmitted
d)
none of the choices
9.
________ matter transmits light but scatters the light as it passes through.
a)
transparent
b)
translucent
c)
opaque
d)
none of the choices
10.
Matter is opaque if it...
a)
absorbs light
b)
reflects light
c)
transmits light
d)
two of the choices
11.
The human eye can distinguish only ______________ light.
a)
red, green, and blue
b)
red, green, yellow
c)
blue, yellow, green
d)
red, white, blue
12.
How does your television make all the colors?
a)
By mixing black, white, and green lights
b)
By mixing red, blue, and green lights
c)
By mixing red, yellow, and green lights
d)
By mixing yellow, blue, and green lights
13.
Mirrors like the one in the following figure are sometimes placed at street intersections so drivers can see around blind corners. What type of mirror is used for this purpose?
a)
Concave
b)
Plane
c)
Convex
d)
Wavy
14.
A straight rod appears to bend when placed in a beaker of water. What is the best explanation for this phenomenon?
a)
Light is refracted at the air-water interface.
b)
The water is warmer than the air.
c)
Light travels faster in water than in air.
d)
None of the choices
15.
This type of mirror produces ONLY virtual, right-side up and life-size images...
a)
concave mirror
b)
plane mirror
c)
convex mirror
d)
wavy mirror
16.
This type of lens produces ONLY virtual, right-side up and smaller than life images...
a)
concave lens
b)
convex lens
c)
plane lens
d)
compound lens
17.
This type of optical instrument uses lenses to make enlarged images of objects that are too small for the unaided eye to see...
a)
microscope
b)
laser
c)
telescope
d)
optic fiber
e)
camera
18.
This type of optical instrument uses lenses to make enlarged images of objects that appear tiny because they are very far away...
a)
microscope
b)
laser
c)
telescope
d)
optic fiber
e)
camera
19.
The __________ controls the amount of light that enters the eye.
a)
pupil
b)
iris
c)
lens
d)
sclera
e)
retina
20.
The __________ is an opaque outer covering that protects the eye.
a)
pupil
b)
iris
c)
lens
d)
sclera
e)
retina
21.
The __________ controls the size of the pupil.
a)
pupil
b)
iris
c)
lens
d)
sclera
e)
retina
22.
________ cells can sense colors but not dim light.
a)
Light
b)
Photocyte
c)
Cone
d)
Rod
23.
________ cells are good at sensing dim light.
a)
Light
b)
Photocyte
c)
Cone
d)
Rod
24.
Nearsightedness is also known as __________.
a)
Myopia
b)
Hyperopia
c)
Glaucoma
d)
Astigmatism
25.
Farsightedness is also known as ___________.
a)
Myopia
b)
Hyperopia
c)
Glaucoma
d)
Astigmatism
26.
Myopia can be corrected with _________ lenses.
a)
toric
b)
concave
c)
convex
d)
hybrid
27.
Hyperopia can be corrected with __________ lenses.
a)
toric
b)
concave
c)
convex
d)
hybrid
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