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Physical Science Chapter 18: Light
Test Description: 5/6 Grade Review
Instructions: Answer all questions to get your test result.
1) A substance that does not transmit light is
A
polarized
B
transparent
C
translucent
D
opaque
2) The scattering of light off an uneven surface is called
A
regular reflection
B
total internal reflection
C
refraction
D
diffuse reflection
3) A convex lens can form
A
either a real image or a virtual image
B
a virtual image
C
a reflection
D
a real image
4) The colored part of the eye is the
A
iris
B
cornea
C
pupil
D
retina
5) A laser produces light that
A
is incoherent
B
has many colors
C
is coherent
D
spreads out in many directions
6) An image that only seems to be where it is seen is a _________ image
A
real
B
imaginary
C
mirage
D
virtual
7) A lens that is thinner in that middle than at the edges is a ____________ lens.
A
micro
B
concave
C
sunglasses
D
convex
8) Under green light, a red object appears _________.
A
yellow
B
green
C
black
D
blue
9) ___________ can be corrected by a convex lens.
A
farsightedness
B
nearsightedness
C
blindness
D
astigmatism
10) ___________ are long, thin strands of glass or plastic that carry light for long distances
A
holograms
B
optical fibers
C
laser beams
D
mirages
11) A material that reflects or absorbs all of the light that strikes it is
A
translucent
B
diffuse reflection
C
opaque
D
transparent
12) A measure of how much a ray of light bends when it enters an object is
A
interference
B
mirage
C
index of refrction
D
reflection
13) The layer of cells lining the inside of the eyeball is the
A
cornea
B
retina
C
pupil
D
iris
14) An object that consists of two convex lenses, one at each end of a long tube, in order to see distant objects is
A
microscope
B
laser
C
refracting telescope
D
reflecting telescope
15) Complete reflection of light by the inside surface of a medium
A
image
B
resonance
C
total internal reflection
D
index of refraction
16) An image formed when rays actually meet at a point, which is an upside down or inverted image.
A
real image
B
virtual image
C
mirage
D
hologram
17) A curved piece of glass or other transparent material that is used to refract light.
A
lens
B
camera
C
laser beams
D
light
18) The transparent front surface of the eye (like a windshield) that light enters the eye through
A
retina
B
cornea
C
pupil
D
iris
19) A short, thick nerve that signals from the rods and cones travel to your brain along
A
ciliary muscles
B
optical fibers
C
optic nerve
D
blood vessels
20) Light amplification by stimulated emission of radiation is referred to as
A
hologram
B
image
C
laser
D
mirage
*select an answer for all questions
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