Water waves- ripple tank

• Lamp above tank of water, motor which makes ripples move from one end to another- ripples reflected underneath onto paper

• Wave speed = frequency x wavelength

• Count number of waves passing a point in 10 secondds. Divide by 10 to find waves in 1 second- frequency

• Wavelength- take photo of 10 waves next to ruler. Then divide by 10.

• Find speed with equation

• Multiple waves- more accuracy, less random errors

• Distance/time

Waves on a string

• Vibration generator- strings vibrate

• Speed of waves- use equation

• Frequency- given frequency on frequency generator

• Wavelength- ruler to measure length of wave- several loops, then divide by number of loops

• More loops- improve accuracy- parallax errors- not viewing side on or perpendicular/in line