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WorksheetsCh 17 and 18 Waves
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
A mechanical waves moves through a medium, which can be
a)
a liquid
b)
a solid
c)
a gas
d)
all of the above
2.
Transverse and longitudinal waves both
a)
have compressions and rarefactions
b)
transfer energy through a medium
c)
move at right angles to the vibration of the medium
d)
are capable of moving the medium a long distance
3.
Which type of mechanical wave needs a source of energy to produce it?
a)
a transverse wave
b)
a longitudinal wave
c)
a surface wave
d)
all of the above
4.
A disturbance sends ripples across water in a tub. These ripples are an example of a
a)
rarefaction
b)
longitudinal wave
c)
compression
d)
surface wave
5.
When a surfer rides an ocean wave on her surfboard, she is actually riding on
a)
a crest that is toppling over
b)
a trough of the wave
c)
the rest position of the wave
d)
a region of rarefaction
6.
In an earthquake, a P wave is a longitudinal wave. it moves through soil and rock as a
a)
wavy line
b)
series of faults
c)
series of compressions and rarefactions
d)
series of crests and troughs
7.
The figure shows a wave movement during 1 second. What is the frequency of this wave?
a)
2 hertz
b)
2 meters/second
c)
0.5 second
d)
1 hertz
8.
A period is the length of time it takes for
a)
a disturbance to start a wave
b)
two complete wavelengths to pass a fixed point
c)
a wave to travel the length of a rope
d)
one complete wavelength to pass a fixed point
9.
A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed?
a)
50 mm/s
b)
50 hertz/s
c)
2.0 mm/s
d)
0.50 mm/s
10.
To find amplitude, measure
a)
from a trough to the rest position
b)
from a crest to the rest position
c)
neither A nor B
d)
either A or B
11.
When a wave strikes a solid barrier, it behaves like a basketball hitting a backboard. This wave behavior is called
a)
constructive interference
b)
diffraction
c)
refraction
d)
reflection
12.
For refraction to occur in a wave, the wave must
a)
strike an obstacle larger than the wavelength
b)
change direction within a medium
c)
enter a new medium at an angle
d)
enter a new medium head-on
13.
In refraction, when a wave travels from one medium to another, it
a)
changes speeds
b)
stays in step
c)
always moves in the same direction
d)
travels in the opposite direction
14.
Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction?
a)
diffraction
b)
destructive interference
c)
standing wave formation
d)
constructive interference
15.
A sound wave is an example of a
a)
transverse wave
b)
longitudinal wave
c)
standing wave
d)
surface wave
16.
In which medium does sound travel the fastest?
a)
salt water
b)
fresh water
c)
air
d)
cast iron
17.
Sonar equipment sends sound waves into deep water and measures
a)
refraction of the transmitted wave
b)
only the direction of the reflected wave
c)
the time delay of the returning echos
d)
interference of the transmitted and reflected waves
18.
An ambulance siren sounds different as it approaches you than when it moves away from you. What scientific term would you use to explain how this happens?
a)
ultrasound
b)
diffraction
c)
rarefaction
d)
the Doppler effect
19.
When a sound source approaches you, the pitch you hear is
a)
lower than when the source is stationary
b)
higher than when the source is stationary
c)
the same as when the source is stationary
d)
first high and then lower than the pitch of the source when stationary
20.
Which part of the ear amplifies the vibrations from sound waves?
a)
outer ear
b)
inner ear
c)
middle ear
d)
both a and b
21.
The part of the eat that sends coded nerve signals to the brain is
a)
the outer ear
b)
the inner ear
c)
the middle ear
d)
the eardrum
22.
Electromagnetic waves vary in
a)
the speed they travel in a vacuum
b)
wavelength and frequency
c)
the way they reflect
d)
the orientation of their electric and magnetic fields
23.
An electromagnetic wave in a vacuum has a wavelength of 0.07 m. What is its frequency?
a)
f=3.0 x 108 m/s
b)
f=4.3 x 109 Hz
c)
f=3.0 x 109 Hz
d)
f=4.3 x 108 m/s
24.
Light acts like
a)
a wave
b)
a particle
c)
both a wave and a particle
d)
neither a wave nor a particle
25.
Infrared rays have a shorter wavelength than
a)
ultraviolet rays
b)
X-rays
c)
radar waves
d)
gamma rays
26.
The full range of frequencies of electromagnetic radiation is called
a)
visible light
b)
radio waves
c)
the electromagnetic spectrum
d)
invisible radiation
27.
The waves with the longest wavelengths in the electromagnetic spectrum are
a)
infrared rays
b)
radio waves
c)
gamma rays
d)
X-rays
28.
The visible light spectrum ranges between
a)
radar waves and X-rays
b)
television waves and infrared rays
c)
infrared rays and ultraviolet rays
d)
ultraviolet rays and gamma rays
29.
A translucent material
a)
scatters some light
b)
transmits all light
c)
absorbs all light
d)
reflects all light
30.
In order of increasing light-transmitting capabilities of materials, which is the correct sequence?
a)
transparent ->opaque -> translucent
b)
opaque-> transparent-> translucent
c)
opaque->translucent->transparent
d)
translucent->transparent->opaque
31.
Which of the following occurs as a light wave bends when it passes from one medium into another?
a)
constructive interference
b)
refraction
c)
destructive interference
d)
reflection
32.
Polarized sunglasses work by
a)
blocking light waves that vibrate in one plane
b)
gradually refracting light as it passed through the lenses
c)
bending light as it passes from air into the lenses
d)
reflecting most of the light that strikes the sunglasses
33.
Newton's prism experiments showed that white sunlight is made up of
a)
the full electromagnetic spectrum
b)
only blue light
c)
all the colors of the visible spectrum
d)
only the longest wavelengths
34.
What an object is mage of and the color of light that strickes it determine the
a)
apparent color of the object
b)
transparency of the object
c)
opacity of the object
d)
translucence of the object
35.
Blue light and yellow light combine to produce white light because
a)
they absorb each other's wavelengths
b)
blue, yellow and white are primary colors
c)
they are complementary colors of light
d)
they are both primary colors of light
36.
The primary colors of light are
a)
green, blue, and black
b)
cyan magenta and yellow
c)
red, yellow and blue
d)
blue, green and red
37.
The primary colors of pigments
a)
are cyan, yellow, and magenta
b)
are the same as the secondary colors of light
c)
combine in equal amounts to produce black
d)
all of the above
38.
An incandescent light bulb produces light when electrons flow through the
a)
air
b)
glass
c)
filament
d)
vacuum
39.
Many streets and parking lots are illuminated with
a)
laser lgiths
b)
tungsten-halogen lights
c)
sodium-vapor lights
d)
fluorescent lights
40.
A fluorescent light tube usually contains
a)
a vacuum
b)
oxygen
c)
mercury vapor
d)
light-emitting diodes
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