Transcript Brian - scienceathawthorn

By Brian Mwendo
How is Electricity generated in
our Homes?

There are many types of energy that
generates electricity, these are tidal, wave,
geothermal, fossil fuels, biomass and solar
energy. But the one that I’m going to talk
about is Biomass and Fossil fuels.
All these types of energy makes electricity that we
use in our homes, some of these types energy
produces carbon and some of these don’t. Also they
are Renewable and non-renewable
What is Non-renewable and
Renewable Mean?

Renewable energy is energy which comes
from natural resources like sunlight, wind,
rain, tides and geothermal which are
renewable.

Non-renewable energy is also a natural
resource which cannot be produced re
grown, re generated or re grown.

Biomass is carbon based and is
composed of a mixture of
organic molecules containing
hydrogen usually including
atoms of oxygen, often nitrogen
and also small quantities of
other atoms, including alkali,
alkaline earth and heavy
metals. Which is all burned in
incinerators.
How does Biomass work?

The most conventional way on how
biomass is used however, still relies on
direct incineration. Forest residues for
example (such as dead trees, branches
and tree stumps), yard clippings, wood
chips and garbage are often used.
Biomass may also include bio-gradable
wastes that can burnt as fuel, just like
fossil fuels.
What is Fossil Fuel?

There are three fossil fuels; coal, oil and natural gas.
According to the Department of Energy, they make up "over
85 percent of all the energy consumed in the United States."
These fuels began being formed millions of years ago. Coal
is mined and mixed with water to create a slurry that is used
in power plants. Oil is pumped from beneath the Earth's
surface in order to be refined into a multitude of products, the
most recognized being gasoline. Like oil, natural gas is also
pumped from beneath the Earth's crust.
Fossil Fuels Are Non-renewable,
but Not All Non-renewable Energy
Sources Are Fossil Fuels
Coal, Petroleum, natural gas, and
propane are all considered as fossil
fuels because they were formed from
the buried remains of plants and animals
that lived millions of years. Uranium ore,
is a solid, is mined and converted to a
fuel used at nuclear power plants.
 Uranium is not a fossil fuel, but is a nonrenewable fuel.
