2.3.33 - Wave quantities

Understand the terms amplitude, frequency, period, speed and wavelength.

Use - wave quantities to connect the rule to the data and decision in the question.

This matters because - wave quantities determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - wave quantities to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Wave quantities is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.