4 Waves - standing waves (Interference)

Two wave pulses with equal positive amplitudes travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?

• It is constructive interference with twice the amplitude

• It is destructive interference with zero amplitude

• It is constructive interference with slightly greater amplitude

• It is constructive interference with the negative amplitude

• The standing wave is produced

Tags

NGSS.HS-PS4-1

Two wave pulses one with a positive amplitude the other with equal negative amplitude travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?

• It is constructive interference with twice the amplitude

• It is destructive interference with zero amplitude

• It is constructive interference with slightly greater amplitude

• It is constructive interference with the negative amplitude

• The standing wave is produced

Standing waves are created by

• Two identical waves reflecting off each other

• Two identical waves being diffracted together

• Two identical waves move through each other in opposite directions

• Two identical waves are diffracted from two identical sources

Tags

NGSS.HS-PS4-1

In the diagram which letters represent the nodes

• A B C

• A C E

• B D

• B D E

• A C D

Tags

NGSS.HS-PS4-1

Which harmonic is shown?

• 1st
• 2nd
• 3rd
• 4th

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

How many antinodes does this standing wave have?

• 5

• 6

• 7

• 8

Tags

NGSS.HS-PS4-1

This is an example of which type of wave behavior?

• Reflection
• Diffraction
• Constructive Interference
• Destructive Interference

What type of interference is represented in the diagram?

• Constructive

• Destructive

What type of interference is represented in this diagram?

• Constructive

• Destructive

The figure shows several modes of vibration of a string fixed at both ends. WHICH NUMBER represents the fifth harmonic?

• 1

• 2

• 3

• 4

• The 5th Harmonic is NOT pictured

Tags

NGSS.HS-PS4-1