Waves (P) Flashcards
1
Q
what do waves do
A
transfer energy without transferring matter
2
Q
what are longitudinal waves
A
travel parallel to the direction of energy transfer e.g. sound waves
3
Q
what are transverse waves
A
travel perpendicular to the direction of energy transfer e.g. water ripples
4
Q
wave equation
A
waves speed = frequency x wavelength
5
Q
EM spectrum in order
A
radio waves, microwaves, infrared, visible, UV, x-rays. gamma rays
6
Q
what do EM waves do
(absorption & emitting)
A
emitted and absorbed by electrons
gamma rays are emitted by nuclei
7
Q
what is refraction
A
wave entering at a medium and their speed and angle changes
8
Q
What waves are most ionising and have high frequency
A
X rays and gamma rays
