Physics 7–9

1. Introduction

Lead	Chapter
1.1.	Introduction

2. Wave motion

Lead	Chapter
2.1.	Oscillation Free chapter!
2.2.	Sound waves
2.3.	Light travels in a straight line
2.4.	Mirrors reflect light
2.5.	Refraction
2.6.	Lenses refract light

3. Stars, space and the universe

Lead	Chapter
3.1.	The universe is expanding
3.2.	The solar system
3.3.	The Earth and Moon system
3.4.	Solar wind and eclipses
3.5.	Radioactive radiation

4. Thermodynamics

Lead	Chapter
4.1.	Thermal energy
4.2.	Changes of state
4.3.	Thermal expansion
4.4.	Thermal energy transfer

5. Mechanics

Lead	Chapter
5.1.	Interaction
5.2.	Interaction as a cause of changes in motion
5.3.	Why does an object tip over?
5.4.	Forces that oppose motion
5.5.	Position and velocity
5.6.	Uniform motion
5.7.	Acceleration
5.8.	Pressure
5.9.	Buoyancy
5.10.	Energy and motion
5.11.	Simple machines

6. Direct current

Lead	Chapter
6.1.	Electric current and electrical devices
6.2.	Voltage
6.3.	Resistance
6.4.	Static electricity
6.5.	Electricity and energy

7. Electromagnetism

Lead	Chapter
7.1.	Magnetism
7.2.	Electromagnets
7.3.	Generators
7.4.	Electrical components
7.5.	Electromagnetic radiation and communications
7.6.	Different sources of electrical energy
7.7.	From power plants to home connections
7.8.	Future challenges in the use and production of electricity

8. Extras

Lead	Chapter
8.1.	Charts
8.2.	For the teacher