This document discusses the different forms of energy. It defines energy as the power that allows things to happen, though it is invisible. There are six main forms of energy: light, sound, heat, electrical, chemical, and mechanical. Light energy is produced by natural sources like the sun or man-made sources like light bulbs. Light travels very fast and is made up of the colors of the visible spectrum.

1. ENERGY
SCIENCE 5th
2nd TERM

2. WHAT IS ENERGY?
• Energy is the power that allows us to do things.
• We can’t see it or touch it but it’s all around us.
• Energy produces all the changes around us.
• Energy can take form or light, sound, heat or
movement. It can power machines.
• It can change from one form to another too.
For example, when you turn on a light, the
electricity transforms into light and thermal
energy.

3. FORMS OF ENERGY
• There are six forms of energy:
• LIGHT ENERGY
• SOUND ENERGY
• HEAT ENERGY (thermal)
• ELECTRICAL ENERGY
• CHEMICAL ENERGY
• MECHANICAL ENERGY (kinetic)

4. LIGHT ENERGY
• Everything that produces light.
• It could be natural like the Sun, or man-made
like light bulbs and candles.

5. ENERGY LIGHT
• We need light when it’s dark because we can’t
see anything. Light illuminates objects and
allows us to see shapes, colours and sizes.
• Light is the fastest form of energy. It travels at
300.000km per second.
• Light looks white but it’s made up of seven
different colours: red, orange, yellow, green,
blue, indigo and violet.

6. ENERGY LIGHT
• Light always travels in a straight line until
something gets in its way.
• When that happens, light can be absorbed,
reflected or refracted (pass through),
depending on what kind of surface it hits.