3.3.1.2 Waves: Longitudinal and Transverse waves Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What are transverse waves?

A

Where the displacement of particles is at right angles to the direction of energy propagation. e.g. em waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How can transverse waves be drawn?

A

As graphs of displacement against distance (gives wavelength)
or as graphs of displacement against time (gives period)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are longitudinal waves?

A

Where displacement of particles or fields is along the direction of energy propagation. e.g. sound waves.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are polarised waves?

A

A wave that oscillates in one direction only (vibrations occur in a single plane)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What types of waves can be polarised?

A

Transverse waves - provides evidence for the nature of transverse waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Describe glare

A

When light is reflected off of some surfaces, it becomes partially polarised.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does the amount of polarisation experienced by light when bouncing off of surfaces depend on?

A

The angle of incident light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What can polarisation be used for?

A

Reduce glare
Improve TV/ radio signals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How does polarisation improve TV signals?

A

To receive a strong signal, you have to line up the rods on the receiving aerial with the rods on the transmitting aerial. It they aren’t aligned, signal strength will be lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly