Describing waves
2 marks · NormalState the difference between the direction of vibration of particles in a transverse wave and a longitudinal wave.
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
In a transverse wave, particles vibrate at right angles to the direction of wave energy. In a longitudinal wave, particles vibrate along (parallel to) the direction of wave energy.
Also accept: Transverse: vibrations are perpendicular to the direction of energy; Longitudinal: vibrations are parallel to the direction of energy.
Common mistakes: Confusing the directions; Giving examples instead of differences
Show mark scheme and worked solution
Marking points
B1 · 1 mark · States 'right angles/perpendicular' for transverse wave.
B2 · 1 mark · States 'along/parallel' for longitudinal wave.
Worked solution
In a transverse wave, the particles vibrate at right angles (perpendicular) to the direction of the wave's energy transfer. In a longitudinal wave, the particles vibrate in the same direction (parallel) as the wave's energy transfer.