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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
transparent
B
translucent
C
polarized
D
opaque
2) The scattering of light off an uneven surface is called
A
diffuse reflection
B
regular reflection
C
refraction
D
total internal reflection
3) A convex lens can form
A
a real image
B
a virtual image
C
either a real image or a virtual image
D
a reflection
4) The colored part of the eye is the
A
retina
B
cornea
C
pupil
D
iris
5) A laser produces light that
A
is incoherent
B
spreads out in many directions
C
has many colors
D
is coherent
6) An image that only seems to be where it is seen is a _________ image
A
mirage
B
real
C
imaginary
D
virtual
7) A lens that is thinner in that middle than at the edges is a ____________ lens.
A
concave
B
convex
C
micro
D
sunglasses
8) Under green light, a red object appears _________.
A
green
B
yellow
C
black
D
blue
9) ___________ can be corrected by a convex lens.
A
astigmatism
B
farsightedness
C
blindness
D
nearsightedness
10) ___________ are long, thin strands of glass or plastic that carry light for long distances
A
laser beams
B
optical fibers
C
holograms
D
mirages
11) A material that reflects or absorbs all of the light that strikes it is
A
transparent
B
translucent
C
opaque
D
diffuse reflection
12) A measure of how much a ray of light bends when it enters an object is
A
mirage
B
interference
C
reflection
D
index of refrction
13) The layer of cells lining the inside of the eyeball is the
A
cornea
B
iris
C
pupil
D
retina
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
reflecting telescope
B
microscope
C
laser
D
refracting telescope
15) Complete reflection of light by the inside surface of a medium
A
index of refraction
B
resonance
C
total internal reflection
D
image
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
hologram
D
mirage
17) A curved piece of glass or other transparent material that is used to refract light.
A
camera
B
lens
C
light
D
laser beams
18) The transparent front surface of the eye (like a windshield) that light enters the eye through
A
pupil
B
iris
C
retina
D
cornea
19) A short, thick nerve that signals from the rods and cones travel to your brain along
A
optic nerve
B
ciliary muscles
C
optical fibers
D
blood vessels
20) Light amplification by stimulated emission of radiation is referred to as
A
mirage
B
image
C
hologram
D
laser
*select an answer for all questions
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