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Unit 4 warming up and readingGlobal warming
Is the whole world becoming warmer and warmer? Why?
energy sourcesWe depend on energy to do many things in our daily lives. For example, energy lights our cities and heats our buildings. Make a list of things that use energy in your home, in your school, or any other places you can think of.
stove light things that use energy in your home micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stove
Wind energy is used as power to produce electricity . Windmills
where electricity is produced by burning coals.The coal power stations
in which oil is refined and made pure. The Oil Refineries
a facility designed to convert nuclear energy into electricity.A nuclear power plant
on the roof of a house on a bright sunny day are used to collect solar energy, making your house warm or heating your water.Solar panels
are used to keep back water and raise its level for irrigation or for producing electricity, etc.The Hydro-electric dams
What source of energy?Geysers(间歇泉)
Geothermal (地热的) Energy Plant
An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. Which energy sources on your list are renewable and which are non-renewable? Discuss
Things that use energy in your homeSources of energyRenewable/non-renewablelightheatingtelevisioncassette playervideo playercomputerfridgestovewashing machinehairdryercoaloilnatural gaswind (wind power)sun (solar energy)uranium (nuclear energy)water (hydro-electric power)plant waste (biomass energy)hot spring or geysers (geothermal energy)the sea (tidal energy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablerenewablerenewable
Discussion :What should we do to save energy in daily life ?
In our daily life, we can do these things like that :1.Turn off the tap when you are cleaning your teeth2. Recycle paper and glass10. Use products that
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