A student in Barbados is analysing tidal patterns. The tide height follows a sinusoidal pattern with a maximum of 2.4 m and a minimum of 0.6 m. What is the amplitude of this tidal function?

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Question

A student in Barbados is analysing tidal patterns. The tide height follows a sinusoidal pattern with a maximum of 2.4 m and a minimum of 0.6 m. What is the amplitude of this tidal function?

Accepted Answer

0.9 m — 9 m. Award 1 mark for calculating amplitude = (maximum − minimum)/2 = (2.4 − 0.6)/2 = 0.9 m. A is incorrect — this is the minimum value. C is incorrect — this is the midline value. D is incorrect — this is the maximum value, not the amplitude.

Answer

2.4 m

Answer

1.5 m

Answer

0.9 m

Answer

0.6 m

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