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Ch 16
Test Description: Sound and Light
Instructions: Answer all questions to get your test result.
1) the pitch of a sound is most closely related to the
A
medium through which the sound travels
B
distance from the sound source
C
frequency of the sound waves
D
intensity of the sound
2) the structure with in the cochlea containing cells that vibrate at different natural frequencies is the
A
hammer and anvil
B
inner ear
C
eardrum
D
basilar membrane
3) a sonar system measures distance by determining the
A
difference between regular sound waves and ultrasound
B
density of a body of water
C
time it takes for sound to be absorbed
D
time it takes for sound waves to be reflected from a surface
4) radar works by sending a signal out from an air traffic control tower that is
A
increased in intensity as it passes through the atmosphere
B
analyzed by a doppler scanner
C
scanned and analyzed by a receiver on the airplane
D
reflected off a plane back to the control tower
5) the color that an object appears to be depends on
A
wavelengths of visible light that reaches your eyes
B
speed with which visible light reaches it
C
angle at which visible light is reflected
D
use of additive rather than subtractive colors
6) light rays that pass through a lens change direction because
A
of internal reflection
B
they are refracted
C
light is broken u into many different colors
D
virtual images always appear slightly larger than real images
7) which of these affect the speed of sound
A
resonance
B
temperature
C
frequency
D
loudness
8) which of these affects the pitch of sound
A
resonance
B
loudness of the sound
C
frequency
D
intensity
9) what causes the sound of a guitar to get louder as it is palyed
A
pitch
B
ultrasound
C
infrasound
D
resonance
10) because its molecules ae far apart. sound waves travel slowly through
A
water
B
iron
C
cold air
D
copper
*select an answer for all questions
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