The equilibrium between energy flow and matter circulation in the environment Student activity Play

The escape velocity Animation Play

The explanation of a photoelectric effect Animation Play

The first and second ionisation energies Simulation Play

The first and second ionisation energies Animation Play

The first and second ionisation energies of the Group 2 elements Whiteboard exercise Play

The first and second ionisation energies of the Group 2 elements Student activity Play

The First Law of Thermodynamics Student activity Play

The First Law of Thermodynamics Whiteboard exercise Play

The First Law of Thermodynamics Class activity Play

The First Law of Thermodynamics Whiteboard presentation Play

The First Law of Thermodynamics Animation Play

The First Law of Thermodynamics Animation Play

The First Law of Thermodynamics in turbo machines Student activity Play

The First Law of Thermodynamics in turbo machines Slideshow Play

The First Law of Thermodynamics in turbo machines Whiteboard exercise Play

The flow of chemical energy through the food chain Animation Play

The flow of heat energy Whiteboard exercise Play

The flow of heat energy Animation Play

The flow of heat energy Student activity Play

The flow of heat energy Slideshow Play

The force of gravity Animation Play

The force of gravity depends on the distance Simulation Play

The force of gravity depends on the distance Whiteboard exercise Play

The force of gravity depends on the distance Student activity Play