The relationship between gravitational acceleration, the shape of the Earth and its rotational motion Student activity Play

The shape of a solid Animation Play

Tides Animation Play

Tides Animation Play

Tides Student activity Play

Tides Whiteboard exercise Play

Types of information sent to the environment Slideshow Play

Universal gravitation Whiteboard exercise Play

Universal gravitation Student activity Play

Variation of electronegativity across a period (1) Student activity Play

Ways of charging bodies Student activity Play

Ways of charging bodies Animation Play

Weight Animation Play

Weight Student activity Play

Weight and gravitation Animation Play

Weight and mass Whiteboard exercise Play

Weight and mass Student activity Play

Wetting and meniscus Whiteboard exercise Play

Wetting and meniscus Student activity Play

Wetting of the sides of a container Animation Play

What does charging involve? Slideshow Play

What is the structure of liquids? Illustration Play

What is the structure of liquids? Student activity Play

Why does dissolving electrolytes in water cause them to dissociate? Animation Play

Why does the electronegativity change across a period? Animation Play