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Light Energy
Test Description: Science Test
Instructions: Answer all questions to get your test result.
1) Light is __________.
A
radiant energy
B
moving matter
C
reflected radiation
D
invisible colors
2) Which of these is a natural light source?
A
both
B
neither
C
stars in the night sky
D
incandescent lightbulbs
3) Which is NOT true about how light moves?
A
It can move through the nothingness of space.
B
It moves at the same speed as sound.
C
It moves as packets of energy called photons.
D
It moves in waves.
4) Light rays refract in a glass of water because__________.
A
light moves in a curved path
B
light moves at different speeds through different materials
C
light bounces off a smooth surface at the same angle at which it strikes it
D
the light moves the water from side to side
5) How does light behave when it hits an opaque surface?
A
It passes through in a straight line.
B
Some light passes through.
C
It is absorbed or reflected.
D
It refracts or bends.
6) What affects the shadow an object will make?
A
all of the above
B
whether the object is opaque, translucent, or transparent
C
how near or far the light source is
D
the angle of the light source
7) We see color because _________.
A
objects reflect the colors we see
B
objects with color have pigments
C
objects absorb the colors we don’t see
D
all of the above
8) Which is true about the human eye?
A
Both a and c
B
A) The lens and retina help focus light.
C
C) The pupil and iris control how much light enters the eye.
D
B) The lens and pupil send images to the brain.
9) Which of the following is true?
A
long wavelength = low frequency and low energy
B
long wavelength = high frequency and high energy
C
long wavelength = low frequency and high energy
D
Long wavelength = high-frequency and low energy
10) Why do radiologists use X-rays instead of visible light to see inside our bodies?
A
Nothing is known to travel faster than X-rays.
B
X-rays have more energy than visible light.
C
X-rays are not as colorful as visible light.
D
X-rays travel in a straight line.
11) __________ is the number of waves that pass a point in a specific length of time.
A
Amplitude
B
Photon
C
Frequency
D
Wavelength
12) __________ is the distance from the center/resting point to the crest/trough.
A
Frequency
B
Photon
C
Wavelength
D
Amplitude
13) The crest is the top of a wave and the trough is the bottom of a wave.
A
na
B
na
C
True
D
False
*select an answer for all questions
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