Please enable JavaScript.
Coggle requires JavaScript to display documents.
WAVES - Coggle Diagram
WAVES
Waves transfer energy and interact in predictable ways
a wave is a disturbance that transfers energy from one place to another
force is required to start a wave
medium: a substance through which a wave moves through
water
ground
air
mechanical waves: waves that transfer energy
waves are classified based on how they move
transverse waves: direction of disturbance = opposite from direction of wave
Longitudinal waves: (compression waves) wave travels in same direction as disturbance
waves behave in predictable ways
waves interact with materials
waves interact with other waves
waves add together: when waves combine, their amplitude adds up and makes a new wave with that amplitude
constructive interference
waves cancel each other out: crest-trough = 0 amplitude wave
destructive interference
reflection: bouncing back of a wave when it hits a barrier
refraction: bending of a wave when it enters another medium at any angle other than 90 degrees
diffraction: spreading out of waves through / around the edge of an obstacle
waves have measurable properties
waves have amplitude, wavelength, and frequency
measuring wave properties
trough: lowest point / valley of a wave
crest: highest point / peak of a wave
amplitude: distance a medium moves above or below its position at rest
bigger amplitude, more energy in wave
wavelength: distance from one crest or trough to next
low frequency, long wave length
high frequency, short wave length
frequency: how often the wave occurs
wave speed can be measured
Speed =wavelength * frequency