Energy

What is energy? Energy makes objects move. It can also make objects change temperature or shape. Machines need different types of energy. For example, cars need petrol or diesel. We call these energy sources fuel. [...]

Non-renewable energy sources Coal Coal is a sedimentary rock because it is made up of the remains of plants and animals that died millions of years ago. We can extract coal by digging mines. [...]

Renewable energy sources The Sun The Sun produces solar energy. It is our main source of energy. Many of the processes on Earth use energy from the Sun. For example, plants use the Sun to make their own food. [...]

Electricity We use electricity every day in homes, offices, schools and factories. We get electricity from: Hydroelectric power stations, which convert water energy into electricity. [...]

We need energy to move. Humans get energy from food. Machines get energy from petrol or electricity. The Sun is a natural source of energy. We call the Sun a renewable energy source because it is unlimited. [...]

Make a model of a windmill What do we need? A piece of cork. Ten toothpicks. A hairdryer. A metal rod. A reel of thread. Scissors. Thick card. Glue. A wooden stand. A clamp. A ball of plasticine. Two pieces of rubber. [...]

We need energy to move. Humans get energy from food. Machines get energy from petrol or electricity. The Sun is a natural source of energy. We call the Sun a renewable energy source because it is unlimited. [...]