Sun is the source of solar energy.

The sun is always present.

Using solar energy, does not make

the sun smaller or reduce its ability

to provide energy.

It is a renewable energy because

sun is always present whether we

use it or not.

Power of the wind help to generate the

wind.

Wind can turn the vanes of wind powered

generators to produce electricity.

Like the sun, the wind is always present

whether we choose to use it power or not.

It is a renewable energy because wind is

always available whether we use it or not.

Any organic materials that can be

converted into energy or into a source of

energy.

Ex: waste products such as unwanted

oil palm parts, spoiled grain, tree limbs,

garbage, paper and manure.

Using special process, biomass can

produce fuel such as ethanol, methane

and fuel oil.

The source of biomass materials can be

grown or planted for replenishment.

Formed from the remains of organisms

that died millions years ago.

It will take millions of years for petroleum

to form if we finish using.

It cannot be renewed or replenished.

So it known as renewable energy.

Developed from the remains of plants

that died 400 millions of years ago.

The coal-forming plant grew in swamps.

It will take millions of years for coal to

form.

So it is under non-renewable energy.

Natural gas is a fossil fuel and is formed in the same way as petroleum.

It often found where petroleum is found.

It will take millions of years to form.

Natural gas also under non-renewable energy