1. Ene rg y and its transfo rmatio n
● ENERGY SOURCES
*Household uses :operating household
appliances, heating systems, means of transfort,
etc.
*Industrial uses: the operation of factories and
businesses, construction, agricultura, etc.
*by avaavailabity in nature : renewable or
non -renewale.
*By origin: primary or secondary.
*By use: Conventional or non-conventional.
*By environmental impact: Clean or polluting.

2. 1.1 Electricity.
*its capacity to be easily transformed into other
forms of energy
*the possibility of transporting it long distances at
low cost

3. Electric power plants
●
The turbine converts
mechanical energy into
the rotating movement of
a shaft
*The alternador is
connected to the turbine
shaft. As the shaft moves,
it produces alternating
electrical current

4. 2 electric power plants
● 2.1. in thermal power plants
water is heated in a boiler by
the heat generated from
the combustion of a fossil
fuel (natural gas,coal or
petroleum)
*Combined cycle power
plants obtain electricy as the
result of two combined
cycles: a cycle that uses air
and gas, and conventional
thermal cyle.

5. 2.1 Conventional poewer plamts
● Nuclear power plants use
nuclear fission reactor
that productes heat to
generate the pressurised
steam needed to move
the turbine rotor.
*Hydroelectric power
plants use the potential
energy providedby the
height of the water stored
in a dam, converting in
into kinetic energy.

6. 2.2 Non-conventional power plants
● Wind farms use the kinetic energy of the
wind to move the blades of a rotor at the top
of a tower this referred to as wind turbine

7. 2.2 Non-conventional power plants
● Solar power plants use the sun's energy .there
are two types photo -thermal power plants are
thermal power plants in which steam is
produced by solar radiation,while photovoltaic
power plants transfor solar radiatio directly into
electricity uisng panels of photovoltais cells.

8. 2.2.
● Biomass consist of all organic compounds that
are produced through natural processes.

9. 2.2.
● Geothermal power plants use the heat found at
deep layers in the Earth, while ocean power
plants use the energy from the oceans and seas:
tides, waves or thermal gradient.

10. 3 environmental impact
● 3.1environmental repercussions
*the exploitation of fossil fuels and nuclear
energy leads to the depletion of
resources.furthermore,fuel extraction
processes are sometimes harmful to the
environment
*petroleum is transported by means of oil
pipelines and oil tankers both can have
accidents which means the risk of a spill.

11. 3.1
● Large hydroelectric power
plants change the natural
cycle of rivers, flood large
areas and deteriorate the
ecosystem.
*Conventional thermar
power plants producter air
pollution, gives off large
amounts of CO2 whitch
increases the greenhouse
and amit gases that cause
acid rain.

12. 3.1
● Nuclear thermal power plants are companied
by the risk of a nuclear accident and the
problem of nuclear waste.
*The fuel we use in motor vehicles and heating
systems gives off gases and pollutants.

13. Waste management
In order to reduce the waste generated by
thermal power plants we can install filters,use
coal with low sulphur cntent and protect largee
forested areas
*some solutions
energy efficiency
*reduce the cosumption habits taht are more
respectful
*renewable energy sources