CONTENTS:

1. FORCES
Speed
Steady speed, speeding up and slowing down
Measuring distance, time and speed
Speed and safety on the roads
Under pressure
Turning with forces
See-saws and balancing
On the move
Stopping and starting: mass, inertia and friction
Designing and testing structures
2. ENERGY
Fuels and oxygen
The world’s energy resources
Energy converters
Useful machines
What is efficiency?
Heat transfer
Energy at home
Home energy conservation
3. SOUND
Hearing
Hearing defects
Sound devices
Sound transmission and conversion
4. LIGHT
Colour
Curved mirrors
Refraction
Optical devices
The eye
Eye defects
The electromagnetic spectrum