sci : waves Flashcards
1
Q
wave
A
disturbance that carries energy
2
Q
wave significance
A
wave carries energy, used for communication and to transmit signals.
3
Q
electromagnetic & mechanical wave?
A
electromagnetic waves don’t need any medium, mechanical does.
4
Q
transverse
A
particles of medium vibrate perpendicular ( ex : string wave )
5
Q
longitudinal
A
particles of the medium vibrate parallel. ( ex : sound wave )
6
Q
characteristics of wave?
A
WAF = wavelength, amplitude, frequency
7
Q
wavelength?
A
distance between two crests or two troughs
8
Q
amplitude
A
maximum height of the crest and trough
9
Q
frequency
A
number of waves and that pass a fixed place in a given amount of time
