WAVES Question Preview (ID: 44138)
WAVES.
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The material through which a wave travels is called a _______.
a) Gas
b) Solid
c) Medium
d) trough
Shining a flash light into a fish tank and seeing that the angle of the light once it hits the water changes is an example of ______________.
a) reflection
b) diffraction
c) interference
d) refraction
CLICK TRUE OR FALSE. Sound waves are longitudinal waves and can travel through solid, liquid, and gas.
a) TRUE
b) FALSE
c)
d)
A pencil looks bent when placed in a beaker of water. This is an example of _________________.
a) reflection
b) diffraction
c) interference
d) refraction
A wave with an amplitude of 2 cm combines with another wave with an amplitude of 1 cm. The resulting combined wave would have an amplitude of ________.
a) 2cm
b) 3cm
c) 1cm
d) correct answer not shown
Click True or False. Destructive interference is used in noise-canceling headphones to block out distracting noises in a listener's surroundings.
a) TRUE
b) FALSE
c)
d)
Whenever a wave enters a new medium, the _______ is likely to change.
a) amplitude
b) color
c) speed
d) correct answer not shown
A wave with an amplitude of 5 cm combine with a wave of -5 cm. What would happen?
a) The waves would combine to form a wave with great amplitude than both.
b) the waves would combine to form a wave with a smaller amplitude than both
c) The waves would cancel out. if in water, it would look at if they disappeared.
d) no correct answer shown
What is the speed of a wave that has a frequency of 2 Hz and a wavelength of 3 m.
a) 5 m/s
b) 1.5 m/s
c) Answer not provided
d) 6 m/s
When a wave enters a new medium at 60 degrees and changes speed, the wave
a) does not bend because one side changes speed before the other side.
b) does not bend because the angle is less the 90 degrees.
c) bends because both sides change speed at the same time.
d) bends because one side changes speed before the other side.
The speed of a wave in a spring is 10 m/s. if the wavelength is 2 m, what is the frequency?
a) 20 Hz
b) 8 Hz
c) 5 Hz
d) 4 Hz
What is the angle of incidence if a reflected wave bounces off a mirror at and angle of 65 degrees.
a) 25 degrees
b) 65 degrees
c) 90 degrees
d) 115 degrees
Which of the following is true about standing waves
a) constructive interference produces points with zero amplitude
b) the nodes are unevenly spaced along the wave
c) the amplitude of anitnodes is greater than nodes
d) nodes are points of maximum energy on the wave
A wave transfers
a) energy
b) water
c) particles
d) air
The distance between 2 crests is a wave's
a) amplitude
b) wavelength
c) frequency
d) speed
Waves the require a medium to travel are called ___________________.
a) Big waves
b) Small waves
c) mechanical Waves
d) Electromagnetic waves
The high point on a transverse wave is called a __________, and the low point is called a ______________.
a) crest, trough
b) trough, crest
c) amplitude, frequency
d) frequency, amplitude
CLICK TRUE OR FALSE. A wave causes vibrations in a medium.
a) TRUE
b) FALSE
c)
d)
A _________wave vibrate the particles of a medium perpendicular to its direction, while a ____________ wave vibrates the particles parallel to its direction.
a) transverse, longitudinal
b) longitudinal, transverse
c) large, small
d) small, large
Transverse and longitudinal waves both have
a) compressions
b) rarefactions
c) crests
d) wavelengths
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