p6- waves Flashcards
amplitude
the maxium displacement of a point on an wave away from it’s unditrubal position
wave length
the distance from a point on one wave to the equivelent point on the next wave
frequencey
the number of waves passing a point each second
longitudinal
oscillations are along the same direction as the direction of travel
transverse
oscillations are at the right angles to the direction of travel
period
the time needed for one wave to pass a given point
compression
region in alogitudianl wvae where the particles are closest together
raefraction
region in a longitudinal wave where the particles are the furthest apart
absorb
when the energy of an em wave is taken up by an object
transmit
when a wave is able to pass through a material
reflect
the wave bounces off a surface
refract
the waves change direction when it enters a medium of differnet density where it has a different speed
electormagnetic spectrum
the collective name for all types of em radiation. they are all transverse waves that travel at 300,000,000 m/s spped of light
ionising
high energy radiation which can remove electrons leaving ions
