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Totten: Wave Interactions Review 1
Test Description: Waves interact with other objects and with each other.
Instructions: Answer all questions to get your test result.
1) _____ is when an object or wave bounces back from a surface it cannot go through.
A
diffraction
B
resonance
C
refraction
D
reflection
2) when a wave enters a new medium at an angle, one side moves slower causing the wave to bend
A
diffraction
B
refraction
C
standing wave
D
reflection
3) When 2 waves meet crest to crest or trough to trough - amplitude increases
A
reflection
B
constructive interference
C
diffraction
D
destructive interference
4) when a wave goes around a barrier or through narrow opening, IT BENDS AND SPREADS OUT
A
reflection
B
standing wave
C
destructive interference
D
diffraction
5) when 2 waves meet CREST to TROUGH, Amplitude decreases
A
constructive interference
B
destructive interference
C
resonance
D
diffraction
6) an increase in amplitude that occurs when external vibrations MATCH an object's natural frequency
A
resonance
B
constructive interference
C
diffraction
D
refraction
7) a wave that appears to stand still, but is really 2 waves interfering as they pass through each other
A
refraction
B
constructive interference
C
resonance
D
standing wave
8) A wave with crest of 18 meters meets a wave with a trough of 6 meters, at the point where they meet what will remain?
A
a trough of 12 meters
B
a crest of 24 meters
C
a crest of 12 meters
9) 2 waves meet in constructive interference. The first wave has an amplitude of 1.5 meters. The second has an amplitude of 4.5 meters. What will be the amplitude where they meet?
A
3.0 meters
B
6 meters
C
0 meters
10) In the 1985 earthquake in Mexico City, what caused buildings 8 to 18 stories high, to crumble?
A
tsunami
B
resonance
C
reflected waves
D
diffraction
11) In a reflected wave, if the angle of incidence is 45 degrees, what is the angle of reflection?
A
45 degrees, they are always equal
B
90 degrees
C
0 degrees
12) In a standing wave, what is the name of the points at 0 amplitude?
A
nodes
B
crests
C
antinodes
13) In a standing wave, what are the points at maximum amplitude?
A
antinodes
B
constructive points
C
nodes
*select an answer for all questions
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