Waves are disturbances that transfer energy through a medium or empty space. They are all around us, from ripples on water to sound and light. Waves have characteristics like amplitude (height) and wavelength (distance between crests).
▸ Wave — A disturbance that transfers energy through matter or space.
Example: Water waves, sound waves, light waves.
▸ Wavelength — The distance between successive crests (or troughs) of a wave.
Example: The length of one complete cycle of a wave.
▸ Amplitude — The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.
Example: The height of a water wave from its resting level.
Audio narration — reads aloud, works offline
In your own words, summarise the main idea of this lesson.