2D Waves
Class:
Name:
1.
2.
__________
Date:
The diagram illustrates the wave pattern formed when a stone is dropped into still water. What
does the collection of points on the outermost circle represent?
(1) a wave front
(2) a wavelength
(3) the frequency
(4) the period
Two wave sources operating in phase in the same medium produce the circular wave patterns
shown in the diagram. The solid lines represent wave crests and the dashed lines represent
wave troughs. Which point is at a position of maximum destructive interference?
(1) A
(2) B
(3) C
(4) D
page 1
3.
The accompanying diagram represents shallow water waves of wavelength passing through two
small openings, A and B, in a barrier.
How much longer is the length of path AP than the length of path BP?
(1) 1
4.
(2) 2
(3) 3
(4) 4
The accompanying diagram shows two sources, A and B, vibrating in phase in the same
uniform medium and producing circular wave fronts.
Which phenomenon occurs at point P?
(1) destructive interference
(2) constructive interference
(3) re ection
(4) refraction
Class: __________
page 2
2D Waves
5.
The accompanying diagram represents the wave pattern produced by two sources located at
points A and B.
Which phenomenon occurs at the intersections of the circular wave fronts?
(1) di raction
6.
(2) interference
(3) refraction
(4) re ection
The diagram below represents shallow water waves of constant wavelength passing through two
small openings, A and B, in a barrier.
Which statement best describes the interference at point P?
(1) It is constructive, and causes a longer wavelength.
(2) It is constructive, and causes an increase in amplitude.
(3) It is destructive, and causes a shorter wavelength.
(4) It is destructive, and causes a decrease in amplitude.
Class: __________
page 3
2D Waves
7.
Two speakers, S1 and S2 , operating in phase in the same medium produce the circular wave
patterns shown in the diagram below.
At which two points is constructive interference occurring?
(1) A and B
8.
(2) A and D
(3) B and C
(4) B and D
The diagram shown represents a wave generator having a constant frequency of 12 hertz
producing parallel wave fronts in a ripple tank. The velocity of the waves is v.
Using a ruler, measure the wavelength of the waves shown and record the value to the nearest
tenth of a centimeter.
Class: __________
page 4
2D Waves
9.
Determine the speed of the waves in the ripple tank. [Show all calculations, including the
equation and substitution with units.]
10.
A wave generator having a constant frequency produces parallel wave fronts in a tank of water
of two di erent depths. The diagram below represents the wave fronts in the deep water.
As the wave travels from the deep water into the shallow water, the speed of the waves
decreases. On the diagram provided below, use a straightedge to draw at least three lines to
represent the wave fronts, with appropriate spacing, in the shallow water.
Class: __________
page 5
2D Waves
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_
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Class: __________
1.
Answer:
1
2.
Answer:
2
3.
Answer:
2
4.
Answer:
2
5.
Answer:
2
6.
Answer:
4
7.
Answer:
2
8.
Answer:
0.9 cm ( 0:1) cm
9.
Answer:
v = 10:8 cm/s
10.
Answer:
2D Waves
06/28/2013