Notes

Sustainable energy, specifically renewable energy or green energy, is an energy source which can be replenished, that is essentially inexhaustible. Sustainable sources of energy include solar, wind, water, biomass and geothermal. Non renewable energy sources include coal, oil and natural…

1st law of Motion The Concept of Inertia Explain the concept of inertia Inertia is the ability of a resting body to resist motion or a moving body to continue moving in a straight line when abruptly stopped. The more…

Explain the concept of light Light can carry both energy and information. It both is the way the sun delivers energy to the world, making life possible, and it is a very important way that we learn about the world,…

Moment of a Force The Effects of Turning Forces Explain the effects of turning forces A force is a push or pull which when applied to a body it will change its state either by stopping it if it was in motion…

The Origin of Magnetism Explain the origin of magnetism Chinese were the first to use the metal magnetite called lodestone. A Lodestone was capable of attracting small iron pieces and it was used as a crude navigation compass by Greeks. Lodestones…

Electric current is the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes. In most DC electric circuits, it can be assumed that the resistance to current flow is a…

Explain the concept of static electricity Static electricity refers to the electric charges stored on a conductor. The Origin of Charges Explain the origin of charges When a plastic pen is rubbed with a cloth, it acquires the property of…