Waves & EM Flashcards
(11 cards)
1
Q
Frequency def and eq
A
How many waves re produced per sec (Hz).
f=1/T (T is the time period - the time it takes for one wave to be produced)
2
Q
Wavelength def
A
Distance from peak to peak or trough to trough (m)
3
Q
Amplitude
A
Maximum height of weave from displacement point
4
Q
Period
A
How long it takes for one wave to be produced
5
Q
Wavefront
A
The surface of points affected by a wave at a given moment
6
Q
Longitudinal
A
Oscillations are parallel to wave direction e.g. Sound and P-waves (seismic)
7
Q
Effects of micro waves
A
Internal heating of body cells
8
Q
Effects of infrared waves
A
Surface skin burns
9
Q
Effects of visible light
A
Eye damage
10
Q
Effects of ultraviolet
A
Eye damage, skin cancer, damage to surface cells
11
Q
Effects of X-rays and gamma
A
Mutation to DNA and damage to body cells
