NATURAL RESOURCES
DEFINITION OF NATURAL RESOURCES
A natural resource is
anything people can use
which comes from
nature.
People do not create
natural resources, but
obtain them from the
Earth.
CLASIFICATION OF NATURAL RESOURCES
There are two types of natural
resources: renewable and nonrenewable
- A renewable resource can be
totally replaced. It may always be
available, or is practically
inexhaustible.
- A non-renewable resource,
once consumed cannot be
replaced
RENEWABLE RESOURCES
● Solar
● Biomass
● Wind
● Water
● Geothermal
SOLAR ENERGY
Solar energy comes from the sun’s
rays (solar radiation) that reach
the Earth.
This energy can be converted into
other forms, such as:
-Electricity (solar panels with
photovoltaic cells)
- Heat (solar collectors)
BIOMASS
Plant remains and
animal waste can be
harnessed into energy.
As an energy source,
biomass can either be
used directly or
converted into other
energy products such
as biofuel
WIND
Wind power is the
conversion of wind energy
into an useful form of
energy.
For example: using wind
turbines to make
electricity.
WATER
Energy from the flow of water,
caused by:
-Rivers
-Waves
-Waterfalls
When this force of energy can
be captured and when it is
used to generate electricity, it
is known as hydro-power (e.g.
dams)
GEOTHERMAL
Energy from the
Earth’s heat.
We can capture this
heat as steam or hot
water and use it to
heat buildings or
generate electricity.
NONRENEWABLE RESOURCES
A non-renewable
resource is a
natural resource
that cannot be remade or re-grown
at a scale
comparable to its
consumption.
NUCLEAR ENERGY
Nuclear energy is
energy in the nucleus
(core) of an atom.
Nuclear fission uses
uranium to create energy.
But once the uranium is
used, it is gone!
FOSSIL FUELS
Coal, petroleum, and
natural gas are called fossil
fuels because they were
formed from the buried
remains of plants and
animals that lived millions
of years ago.
HOW IS COAL MADE ???
WHAT’S THE DIFFERENCE BETWEEN
COAL, OIL AND NATURAL GAS?
SUMMARY
NATURAL RESOURCES
RENEWABLE
NON-RENEWABLE
SUN
NUCLEAR
BIOMASS
WIND
FOSSIL FUELS
WATER
GEOTHERMAL
A COMPARISON
RENEWABLE
NON-RENEWABLE
ADVANTAGES:
ADVANTAGES:
•They are plentiful
•Often simple to obtain and use.
•They have low carbon emissions.
•Easy to transport and distribute.
•They can provide energy independence to a
country.
DISADVANTAGES:
•They are limited in supply.
DISADVANTAGES:
•They are not always available (cloudy days).
•The speed at which such resources are being
utilized can have serious environmental
consequences.
•They are often located in remote areas.
•They release toxic gases in the air which are
the major causes for global warming.
•Potential source of global political unrest.
CONCLUSION
Energy efficiency and renewable energy are said to be the twin
pillars of sustainable energy policy.
Renewable energies contribute to reducing Spain’s dependence
on foreign resources; they diversify the energy supply and
advance technological development and job creation.
THANKS FOR YOUR ATTENTION
HMMMM....
1. Most of the energy we use originally came from :
a. the sun
b. the air
c. the soil
d. the oceans
2. Solar, biomass, geothermal, wind, and hydropower energy are all
renewable sources of energy. They are called renewable because they
a. are clean and free to use
b. can be converted directly into heat and electricity
c. can be replenished by nature in a short period of time
d. do not produce air pollution
3. In a nuclear power plant, uranium atoms :
a. combine and give off heat energy
b. split and give off heat energy
c. burn and give off heat energy
d. split and give off electrons
HMMMM....
4. Coal, petroleum, natural gas, and propane are fossil fuels. They are
called fossil fuels because:
a. they are burned to release energy and they cause air pollution
b. they were formed from the buried remains of plants and tiny animals
that lived hundred of millions of years ago
c. they are nonrenewable and will run out
d. they are mixed with fossils to provide energy
5. Global warming focuses on an increase in the level of which gas in the
atmosphere?
a. ozone
b. sulfur dioxide
c. carbon dioxide
d. nitrous oxide
6. Today, which renewable energy source provides Spain with the most
energy?
a. wind
b. solar
c. biomass
d. hydropower
GLOSSARY
Biomass Energy: A renewable source of energy that is made from plant material
and animal waste.
Energy Efficiency: The practice of using less energy to do something as good as
before or better.
Fossil Fuel: Fuel consisting of the remains of organisms preserved in rocks in the
Earth's crust with high carbon and hydrogen content.
Geothermal Energy: The heat energy that is produced by natural processes inside
the earth. It can be taken from hot springs, reservoirs of hot water deep below the
ground, or by breaking open the rock itself.
Hydropower Energy: that comes from moving water. The force of the water
pushes on blades in a turbine and produces electricity.
Natural Gas: An odorless, colorless, tasteless, non-toxic clean-burning fossil fuel.
It is usually found in fossil fuel deposits and used as a fuel.
Nuclear Energy: Energy that comes from splitting atoms of radioactive materials,
such as uranium.
GLOSSARY
Non-Renewable Energy: Energy sources that can’t be replenished (made again)
in a short period of time. These energy sources come out of the ground as
liquids, gases and solids. Oil, natural gas, coal and uranium are all examples of
non-renewable energy sources.
Photovoltaic Cells: A device that converts energy from light into electricity.
Renewable Energy: Energy sources can be replenished (made again) in a short
period of time. Sunlight, wind, water, geothermal, and plants are all examples of
renewable energy sources.
Solar Energy: The radiant energy of the sun, which can be converted into other
forms of energy, such as heat or electricity.
Wind Energy: Energy from the movement of wind. Windmills and wind turbines
use the force of wind to spin their blades and produce energy.
Wind Turbines: A rotating device, like a windmill, that converts the movement of
air into electricity.