renewable non renewable
TRANSCRIPT
FORMS OF ENERGY. RENEWABLE AND NON- RENEWABLE ENERGY SOURCES.
KINETIC ENERGY
It is the energy of movement and
motion.
The heavier and faster and objets is
the more kinetic energy it has.
POTENTIAL ENERGY
It is the energy that is stored.
When it is released, it
changes into other form of
energy.
The coal changes into light and heat.
Wood changes into light and heat.
Stored water changes into electricity.
MECHANICAL ENERGY
It is a mixture between kinetic
and potential energy.
Example: a person and a bike.
The bike is moving, so it is kinetic energy. The energy of
person changes into the force, so it is potential energy.
LIGHT ENERGY
Light sources produce light.
Light sources can be natural like the
Sun or stars or artificial, like a
light bulb, torch, etc.
CHEMICAL ENERGY
In chemical energy a chemical reaction occurs. This reaction is transformed into another form of
energy.
Examples: The energy of batteries transforms into kinetic
energy.The energy of food
transforms into kinetic and thermal energy.
THERMAL ENERGY
It is the energy that hot objects
produce.
The heat flows from hot products to cold products.
ELECTRICAL ENERGY
How can it transform into? Where does it come from?
Electricity can transform into light, for example light bulbs and torches.
Electricity can transform into sound, for example in a CD player.
Electricity can transform into heat, for example in a heater.
Electricity can transform into movement, for example in a robot or an
electric car.
WHERE DOES IT COME FROM?
It can come from water, like stored water.
It can come from sunlight, like solar panels.
It can come from nuclear power stations.
It can come from wind, like the energy produced by windmills (wind turbines).
It can come from biomass.
RENEWABLE AND NON-RENEWABLE ENERGY SOURCES.
Renewable sources will never
run out.
Non- renewable energy sources will run out sooner or
later.
SOLAR ENERGY
POSITIVE THINGS NEGATIVE THINGS
It is renewable and does not pollute.
It only works in sunny places.
WIND ENERGY
POSITIVE THINGS NEGATIVE THINGS
It is clean and renewable.
Wind turbines only work in
windy places.
Wind turbines can kill birds.
It is renewable and does not
pollute.
The construction of dams damages habitats.
The construction of dams causes biodiversity loss.
WATER ENERGY
POSITIVE THINGS NEGATIVE THINGS
BIOMASS
First, biomass is burned.
Then, the fire heats the water.
Next, the water boils and produces water vapor or steam.
Soon, the steam moves the wind turbine.
Finally, the movement produces electricity.
GEOTHERMAL ENERGY
It is the energy which is produced inside the Earth. Sometimes it reaches the surface as volcanoes
POSITIVE THINGS
It is renewable.
It does not pollute.
It is limited to certain
geographical areas.
NEGATIVE THINGS
FOSSIL FUELS
Fossil fuels are coal and oil. They are made of remains of animals and plants
that have been underground for millions of years.
It is non- renewable
It pollutes a lot
It produces global
warming
POSITIVE THINGS
COAL
It produces large quantities of
energy.
NEGATIVE THINGS
It is non- renewable.
It causes ecological disasters.
It is easy to transport
and store.
OIL
POSITIVE THINGS NEGATIVE THINGS
What is uranium?
It is a radioactive mineral that people use in nuclear power stations.
Nuclear power stations produce radioactive waste.
Radioactive is harmful because it produces cancer.
PHOTOVOLTAIC CELLS AND SOLAR PANELS
This is a photovoltaic cell. It transforms solar energy into
electricity.
Photovoltaic cells don't need cables to connect to a network, so they can be used in remote areas and portable
devices.
Solar panels are made of several photovoltaic cells.
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