1. Alternative energy resources
By: Jia Le

2. Why alternatives?
As you know, our resources are depleting. Thus,
scientist and researchers have turned to natural
resources in their bid to save the Earth.

3. Some examples of alternatives...
Solar energy
Wind energy
Biomass fuel
Hydrogen and so on...

4. Solar energy
According to the Energy Budget, our Earth is able to receive
around 51% of the Sun's solar energy. The rest is either absorbed
by clouds or the atmosphere or radiated back into space.
But the 51% we receive carries quite a punch.
Remember the old saying, "Either use it or lose it"? It certainly
applies here. Each day, we have this 51% of the sun's rays coming
down on us. For sure, it gives us sunlight and heat, but we could be
getting a lot more by taking advantage of some practical resources.
We can do this by using solar-plated calculators and cars etc.

5. Wind energy
Let's define Wind energy. Wind Energy is defined as the
“power generated by harnessing the wind, usually by
windmills”. In scientific terms, wind energy is the "force" of
winds blowing across the earth’s surface ("Wind Energy").
Wind energy was first harvested centuries ago, when early
windmills were used to power millstones, pumps, and forges.
Wind energy systems generate electrical energy by
harnessing the power in wind using machines called wind
turbines.

6. Biomass fuel
Biomass fuel refers to anything that can either burn or
decompose. Other terms are biomass energy or biofuel.
The prefix "bio" refers to life.
Bio energy technologies use renewable organic resources, called
biomass, to produce many energy related products including
electricity, liquid, solid and gaseous fuels, heat, chemicals and
other materials.
Biomass fuels are starting to become more popular due to the
rising costs of fossil fuels. The beauty of using these biofuels is
that we can develop our own fuels at home.

7. Hydrogen
Just like Solar, Hydrogen and Biomass energy has been
utilized for thousands of years. Hydrogen technology as a
fuel source has also been known for over 150 years. What's
more interesting, anybody can produce hydrogen gas as a
fuel source to be used in their vehicle or small engine.
There is much debate about the economics of producing
hydrogen as a fuel, but either way, it certainly makes a great
alternative to do further research on in the future.

8. To sum it up in a nut shell, we should do our
best to use alternatives as often as we can to
save the Earth. Our resources are depleting.
Natural energy resources is our choice.

9. Thank You!!