Science · Grades 8–12
Wave speed
Frequency is cycles per second; wavelength is the distance per cycle.
The key idea
Frequency is cycles per second; wavelength is the distance per cycle.
v = fλ
Worked examples
A periodic wave has frequency 41 Hz and wavelength 10 m. Find its speed in m/s.
41 × 10 = 410
410 m/s
A periodic wave has frequency 13 Hz and wavelength 9 m. Find its speed in m/s.
13 × 9 = 117
117 m/s
Try it yourself
A periodic wave has frequency 33 Hz and wavelength 14 m. Find its speed in m/s.
A periodic wave has frequency 10 Hz and wavelength 9 m. Find its speed in m/s.
Check your understanding
Answers and marking notes
- 462 m/s
33 × 14 = 462
- 90 m/s
10 × 9 = 90
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.