A student observing waves on a beach in Tobago measures the distance between 5 consecutive wave crests to be 12 metres. What is the wavelength of these waves?

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Question

A student observing waves on a beach in Tobago measures the distance between 5 consecutive wave crests to be 12 metres. What is the wavelength of these waves?

Accepted Answer

3.0 m — 0 m. Award 1 mark for correct answer. Five consecutive crests contain 4 complete wavelengths (the gaps between crests). Wavelength = 12/4 = 3.0 m. A is incorrect because it divides by 5 instead of 4. C is incorrect because it uses the total distance. D is incorrect because it multiplies 12 × 5.

Answer

12 m

Answer

3.0 m

Answer

60 m

Answer

2.4 m

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