Describing waves
2 marks · EasyThe diagram below shows a transverse wave on a rope.
(a)[1 mark]
Name the points labelled B and D.
(b)[1 mark]
Name the points labelled A, C, and E.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) B is a crest, D is a trough.
(b) A, C, E are at the equilibrium (rest) position.
Must show: Labels: crest, trough, equilibrium/rest position
Common mistakes: Labelling all as crests/troughs
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Identifies B as crest and D as trough.
B1 (b) · 1 mark · States A, C, E are equilibrium/rest position.
Worked solution
a) B is the crest, D is the trough.
b) A, C, and E are points at the equilibrium (rest) position of the wave.