Grade 9: Physics
Online lessons to help you learn.
Take online learning one step at a time with our digital content and interactive simulations. To launch a lesson click on the green folder symbol. To launch a simulation click on the green hand symbol.
1. Gravity
Learn that gravity is a force of attraction which acts on Earth towards the centre of the planet, and that the size of the force of gravity depends on the mass of each object and the distance between them.
2. Gravity and the Solar System
Understand how the movement of planets around the Sun is related to gravitational forces.
3. Refraction
Learn about refraction of light and know some examples.
4. Series and Parallel Circuits
Learn how to design and construct series and parallel circuits, and understand the differences between them.
5. Forces
Learn what forces are and what they can do.
5. Day and Night
Understand how the movement of the Earth causes day and night and the apparent daily movement of the Sun.
6. Electric Current
Learn that current is the flow of electricity around a circuit and that the greater the resistance of the circuit, the less current flows.
7. Measuring Current
Learn how to measure current with an ammeter.
8. Measuring Voltage
Learn how to measure voltage with a voltmeter.