click below
click below
Normal Size Small Size show me how
waves
mechanical and electromagentic waves
Term | Definition |
---|---|
transverse wave | a wave vibrating at right angles to the direction of its forward movement; up and down |
longitudinal wave | a wave vibrating parallel to (or in the same direction as) the direction of its forward movement |
mechanical wave | needs a medium to travel |
electromagnetic wave | does not need a medium to travel; can travel in a vacuum |
amplitude | distance from the point of origin to the crest OR trough; determines the energy of the wave; associated with volume and brightness |
wavelength | distance from any point on a wave to the corresponding point on the next consecutive wave; crest to crest etc |
frequency | number of waves that pass a certain point in 1 second; associated with pitch or tone; also determines color |
reflection | bouncing back of waves upon reaching another surface |
refraction | apparent bending of a wave as it encounters a different medium resulting in a change of speed |
absorption | transfer of energy to the matter as the wave passes through it |
transmission | transfer of energy through a surface or obstacle |