Ch14 A-level Physics CIE

Energy

What does a progressive wave carry which a stationary wave does not?

Standing wave

What is another name for a stationary wave?

Frequency

For any particular string, what has to be exactly the right value in order to set up a stationary wave?

Antinode

What do we call the point on a stationary wave that vibrates with maximum amplitude?

Node

What do we call the point on a stationary wave that does not move?

180 degrees

What is the phase difference between any two adjacent antinodes?

Two progressive waves travelling through each other

A stationary wave is made from what?

Frequency and amplitude

In order to create a stationary wave, the two progressive waves travelling through each other must both have the same...

wavelength/2

What is the the distance between two adjacent nodes always equal to?

Vibration generator

Which piece of equipment do we use to create stationary waves on a string?

Node

In a stationary wave on a string, what is always at the ends of the string?

Microwave emitter

Which piece of equipment do we use to create stationary waves using microwaves?

Metal sheet

Which piece of equipment do we use to turn normal microwaves into a standing microwave?

Microwave probe

When creating stationary waves with microwaves, which piece of equipment do we use to detect nodes and antinodes?

Zero

When creating stationary waves with microwaves, what value of intensity would we record at a NODE?

Maximum

When creating stationary waves with microwaves, what value of intensity would we record at a ANTINODE?

Node

If we made stationary waves with sound in a pipe closed at one end but open at the other, is there a node or an antinode at the CLOSED end?

Antinode

If we made stationary waves with sound in a pipe closed at one end but open at the other, is there a node or an antinode at the OPEN end?

Antinode

If we made stationary waves with sound in a pipe open at BOTH ends, is there a node or an antinode at each end?

Fundamental; first harmonic

Which TWO term means the minimum possible frequency of a standing wave?

Second harmonic

Which term means the second lowest possible frequency of a standing wave?

Third harmonic

Which term means the third lowest possible frequency of a standing wave?

Yes

Can you remember how to draw these stationary wave patterns for a string? Do you also know how to find the equation linking frequency and length for each one?

Yes

Can you remember how to draw these stationary wave patterns for a pipe closed at one end? Do you also know how to find the equation linking frequency and length for each one?

Yes

Can you remember how to draw these stationary wave patterns for a pipe closed at one end? Do you also know how to find the equation linking frequency and length for each one?