Science Bank 5 (Waves): part 1 – introduction to waves (to 4m 15s); part 2 – reflection (to 9m 30s); part 3 – refraction (to 14m 10s):
P7 waves from davaruss – a good powerpoint but it covers more than we need (check the syllabus statements).
A short (3m 48s) video clip on Types of Wave (Clipbank).
Curriculum Bites has two short revision videos– Waves (5m 57s) & Uses of Waves (5m 19s).
GCSE Bitesize foundation level – Waves (17m 22s) – the first part covers the characteristics of waves.