Sound amplification Whiteboard exercise Play

Sound amplification Student activity Play

Sound and energy Illustration Play

Sound box Slideshow Play

Sound intensity Whiteboard exercise Play

Sound intensity Student activity Play

Sound intensity and distance Whiteboard exercise Play

Sound intensity and distance Student activity Play

Sound intensity and distance Simulation Play

Sound waves Animation Play

Sound waves Student activity Play

Source of electricity Animation Play

Sources of energy and the respiratory quotient Illustration Play

Sources of heat Class activity Play

Sources of heat Class activity Play

Sources of heat Whiteboard presentation Play

Sources of heat Whiteboard presentation Play

Spectral series Animation Play

Spectroscopy and electromagnetic radiation Student activity Play

Spectroscopy and quantisation of energy Animation Play

Spectrum of hydrogen Whiteboard exercise Play

Spectrum of hydrogen Student activity Play

Spontaneous and stimulated emission Whiteboard exercise Play

Spontaneous and stimulated emission Student activity Play

Spontaneous changes Animation Play