Edexcel IGCSE Physics · Spec 3.8
Investigating Waves
Required practical: investigating waves in a ripple tank and on a string.
Physics revision video
Investigating Waves
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Spec 3.8
What you need to know
- Measure the frequency and wavelength of waves
- Find the wave speed from those measurements
- Describe doing this with a ripple tank and with a string
Active recall
Quick check
Answer each question before opening the answer.
How can you find the speed of water waves in a ripple tank?
Measure the frequency and the wavelength and use v = f × λ.
How do you measure the frequency of a wave?
Count the number of waves passing a point each second (or use f = 1 ÷ T).
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