# Physics: P1.5 - Waves

• Created by: shcoool
• Created on: 25-05-15 18:53
What do waves do?
they transfer energy
1 of 15
What types of wave exist?
transverse - energy travels at a right angle to the direction of the wave, longitudinal - the energy travels in the same direction of the wave
2 of 15
What type are electromagnetic, sound and mechanical?
longitudinal - transverse, sound - longitudinal, mechanical - either
3 of 15
Describe electromagnetic waves
The travel at the same speed in a vacuum and form a continuous spectrum
4 of 15
What do longitudinal waves show?
rarefaction and compression (areas of)
5 of 15
What can be done to waves?
reflection, refraction and diffraction; a change in direction when they are refracted at an interface
6 of 15
What is frequency, wavelength and amplitude?
frequency - number of waves per second, wavelength - distance from one crest to the next, amplitude - the distance from one cres
7 of 15
What equation do all waves obey?
v = f*lamda
8 of 15
What waves can be used for communication?
radio waves, microwaves, infrared and visible light
9 of 15
What is the normal?
A construction line perpendicular to the reflecting surface at the point of incidence
10 of 15
The angle of incidence...
... is equal to the angle of reflection
11 of 15
How is the image in the plane mirror produced?
virtual, upright and laterally inverted
12 of 15
What are sound waves?
They are longitudinal waves that cause vibrations in a medium which are dtected as sound
13 of 15
How is th epitch and loudness determined?
By its frequency an damplitude
14 of 15
What are echoes?
reflections of sound
15 of 15

## Other cards in this set

### Card 2

#### Front

What types of wave exist?

#### Back

transverse - energy travels at a right angle to the direction of the wave, longitudinal - the energy travels in the same direction of the wave

### Card 3

#### Front

What type are electromagnetic, sound and mechanical?

### Card 4

#### Front

Describe electromagnetic waves

### Card 5

#### Front

What do longitudinal waves show?