Unit 9 - Target #2

The points on the standing wave with the minimum, usually zero amplitude.

• antinodes

• amplitudes

• nodes

• harmonics

A string is clamped at both ends and plucked so it vibrates in a standing mode as shown below. How many nodes and antinodes are there?

• 2 nodes, 3 antinodes
• 3 nodes, 2 antinodes
• 4 nodes, 3 antinodes
• 3 nodes, 4 antinodes

Tags

NGSS.HS-PS4-1

What happens when the crest of one wave meets the trough of another wave?

• the resulting wave is has a bigger amplitude
• the resulting wave has a smaller amplitude
• the resulting wave has the same amplitude as the original waves
• there is no change to the amplitude of the waves

Constructive interference happens when two waves

• change their speed and bend
• meet and make a wave with a smaller amplitude
• meet and make a wave with a bigger amplitude
• go around a barrier

Destructive interference happens when two waves

• change their speed and bend
• meet and make a wave with a smaller amplitude
• meet and make a wave with a bigger amplitude
• go around a barrier

The moving black dot is called:

• a node
• an anti-node
• an anti-amplitude
• the wangy bit

Tags

NGSS.HS-PS4-1

The stationary dot is called:

• a node.
• an anti-node.
• the amplitude.
• the not moving bit.

Tags

NGSS.HS-PS4-1

A string that is 2.0 meters long is fixed at both ends and tightened until the wave speed is 18 m/s. What is the frequency of the standing wave shown in the figure?

• 27 Hz
• 54 Hz
• 81 Hz
• 110 Hz

Tags

NGSS.HS-PS4-1

A standing wave is oscillating at 950 Hz on a string, as shown in the figure. What is the wave speed?

• 380 m/s
• 570 m/s
• 290 m/s
• 190 m/s

Tags

NGSS.HS-PS4-1

A __________________________wave have patterns made by nodes and antinodes.

• standing
• compressional
• transverse