Standing Waves Review

Quiz
•
Physics
•
11th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sketch A shows two identical pulses traveling in opposite directions along a string, each with a speed of 1.0 cm/s. After 4.0 s, the string will look like which of the other sketches?
1
2
3
4
5
Tags
NGSS.HS-PS4-5
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Why does your voice change pitch when you speak after inhaling the contents of a helium-filled balloon?
The helium decreases the effective length of your vocal cords, so their fundamental frequency is increased
The helium increases the stiffness of your vocal cords, so their fundamental frequency is increased.
The speed of sound in helium is higher than the speed of sound in air, so the fundamental frequency of your throat and mouth cavity is increased.
The speed of sound in helium is lower than the speed of sound in air, so the frequency of the sound released into the air is increased.
Helium is a lighter gas than air, so the resulting buoyancy force causes the pitch to rise.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The figure represents a string of length L, fixed at both ends, vibrating in several harmonics. Which string shows the 4th harmonic?
A
B
C
D
E
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The figure represents a string of length L, fixed at both ends, vibrating in several harmonics. Which string shows the 3rd harmonic?
A
B
C
D
E
Tags
NGSS.HS-PS4-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The figure shows several modes of vibration of a string fixed at both ends. The mode of vibration that represents the fifth harmonic is
1
2
3
4
None of these is correct.
Tags
NGSS.HS-PS4-1
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A stretched string is fixed at points 1 and 5. When it is vibrating at the second harmonic frequency, the nodes of the standing wave are at points
1 and 5.
1, 3, and 5.
1 and 3.
2 and 4.
1, 2, 3, 4, and 5.
Tags
NGSS.HS-PS4-1
NGSS.HS-PS4-5
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A stretched string is fixed at points 1 and 5. When it is vibrating in its first harmonic frequency, the nodes are at points
1 and 5 only.
1, 3, and 5.
2 and 4.
2, 3, and 4.
1, 2, 3, 4, and 5.
Tags
NGSS.HS-PS4-1
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