1 Seeing forces
2 Forces big and small
3 Weight-the pull of gravity
4 Friction-an important force
5 Air resistance
6 Pattern of falling
1 Using energy
2 Chemical stores of energy
3 More energy stores
4 Thermal energy
5 Kinetic energy
6 Energy on the move
7 Energy changing form
8 Energy is conserved
1 Day and night
2 The starry skies
3 The moving planets
4 Seeing stars and planets
5 The moon and its phases
6 A revolution of in astronomy
7 400 years into space
8 Journey into space
1 How fast? – measuring speed
2 Speed check
3 Speed calculations
4 Patterns of movement
5 Distance/time graphs
1 Changing sound
2 Looking at vibrations
3 How sound travels
4 Sounds on screen
5 How we hear
1 How light travels
2 How shadows form
3 How reflections form
4 How light bends
5 The spectrum of white light
6 Coloured light
1 Magnets and magnetic materials
2 Magnetic poles
3 Magnetic field patterns
4 Making an electromagnet
5 A stronger electromagnet
6 Electric current make magnetic fields
