Summary AQA A level Physics notes- Waves

Unit 02
Waves

, 01 Progressive & Stationary waves


Wave motion -

occurs when energy is transferred from one point to another

without there being any transfer of matter blan those points



Get -
de




e
En
Waves
mechanical electromagnetic

-require physical medium for -can travel through vacuum

by the
their propagation -progress partly delayed
physical medium
ex) water waves a
ext
light is t
Mill
-

sound waves
radio waves ,
microwaves ,

waves on
strings a
X-rays

*All electromagnetic
speed
at the same
waves travel

in a vacuum




-standing sound waves -




high pitch higher frequency & lower i


.
1 Progressive waves ,
definitions


has fixed end
Progressive wave no
:
·




-

If mechanical disturbance at
X
B >
Point A causes a particle at




vo
that point to be ed that




↑
,




I
M

particle can
drag its neighbor
Amplitude
-




along behind it causing
- -
the wave

⑧
W to travel from A via the disturbance
A Distance from


↓
- -




in intermediate particles
↓
->
source ,
to
point B
-




direction of
the energy
↓
direction of displacement
& down waves
-up