Physics 11 · Physics · Lesson 7.1
Wave Properties
- Level
- Grade 11
- Reading time
- 12 min reading
- Review
- Last reviewed 2026-09-03
- Standard
- Accuracy standard
- Errata
Abstract
Frequency, wavelength and the wave equation.
What is the wave equation in physics?
Short answer
A wave transfers energy without transferring matter, described by its wavelength, frequency, and speed. The wave equation links them: v = fλ, where v is wave speed, f is frequency (waves per second, in hertz), and λ is wavelength (distance between crests). For a given medium the speed is fixed, so higher frequency means shorter wavelength.
Concept preview
What you will be able to do
- 01Distinguish transverse and longitudinal waves
- 02Identify amplitude, wavelength, frequency and period
- 03Use the wave equation v = fλ
Drop a pebble in a pond and ripples race outward — but a floating leaf just bobs in place, it doesn't travel with the ripple. That's the deep idea of a wave: it carries energy from place to place without carrying the material along with it. The water stays put; only the disturbance moves. Sound, light, earthquakes and radio all work this way — energy on the move, matter staying home.
School Plan
Wave Properties
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Related topics
Frequently asked questions
- What is the difference between frequency and wavelength?
- Frequency is how many waves pass per second (hertz); wavelength is the distance between successive crests. They are inversely related at fixed speed.
- What is the difference between transverse and longitudinal waves?
- In transverse waves the medium moves perpendicular to travel; in longitudinal waves it moves parallel, as in sound.