Film Fest English Toolkit 1 - Natural Sciences Activities We can use solar energy to warm and light our homes, heat our water and provide electricity for our cookers, refrigerators and o
Trang 1Film Fest
English Toolkit 1 - Natural Sciences
Activities
We can use solar energy to warm and light our
homes, heat our water and provide electricity for
our cookers, refrigerators and other appliances
It is unlimited and it does not cause air or water
pollution The problem with solar energy is that
it is only a viable option in places where the sun
shines
The wind moves the blades of wind turbines in
wind farms or wind plants These are connected
to the power grid and provide electricity for
many people They need to be located in areas
where the wind blows at a constant speed but
this does not occur everywhere in the world
Hydroelectric power plants use the water in
rivers, dams, reservoirs and streams to run
Sun, Wind and Water
turbines which generate electricity Hydropower
is inexpensive and does not produce air pollution but dams can disrupt the ecology of the region For example, the water temperature and level may change, killing fish and affecting plants that grow along the riverbanks
We can also get energy from biomass, the scientific word for rubbish It includes wood, plant residues, animal and municipal waste
It can be used to provide heat, make fuel and generate electricity It is abundant and cheap but it requires effective management Otherwise,
we might consume it faster than we produce
it Also, like any fuel, biomass can create air pollution when it is burned or converted into energy
Correct them if you consider they are wrong
a Solar energy produces electricity for all types of devices; on a
cloudy day the electric machines in a house would stop working
b Turbines transform the wind into power, they can be installed anywhere
Alternative Forms of Energy
1
2
3
4
a
b
c
d
Trang 24 AModule
English Toolkit 1 - Natural Sciences
topics: solar power systems, wind energy
and hydroelectric power plants.
a Explain the difference between renewable and
non-renewable energy.
b Classify the sources of energy in the previous text
c What advantages and disadvantages do fossil fuels
have compared to renewable energy?
d List electric appliances used at home, at school
and at work What are they used for? Which ones
do you consider essential? Why?
a Carry out a street survey on how to save
energy Draw your own conclusions.
b Do people save or waste energy? List ways
of wasting energy.
c Hydroelectric plants kill fish because they get electric shocks
d Rubbish can become electricity through a very clean process
can you save energy in a conventional house? Write a paragraph.
Source of energy Advantages Disadvantages