Grade 8 · Science
Connect wave measurements practice
Use stated wave speed, frequency, wavelength and amplitude definitions to interpret simple measurements.
Opening your practice adventure…
Try a sample
Amplitude is maximum displacement from equilibrium. A point moves at most 2 cm from equilibrium. What is its amplitude?
- 2 Hz
- 0 cm
- 4 cm
- 2 cm
See the answer & why
2 cm
The given maximum displacement is the amplitude, not a frequency.
A little hint: Use speed = frequency × wavelength, and keep amplitude separate from frequency.
A teaching tip
Use speed = frequency × wavelength, and keep amplitude separate from frequency.