文档介绍：2. Warm-up Exercises
5. Background Information
Deer
BR_MAIN
Before Reading
Global Reading
Detailed Reading
After Reading
3. A Quiz
1. Word Web
4. An English Song
Energy Crisis
Ecological System (Ecosystem)
Before Reading_1_1
Before Reading
Global Reading
Detailed Reading
After Reading
Word Web
Directions: What words will occur to you whenever we mention the word “energy”?
Write down as many words as possible about it.
ENERGY
heat
solar energy
wind
coal
gas
oil
atomic energy
nuclear energy
energy resources
energy crisis
conservation of energy
, wind, fossil,
Before
Warm-up Exercises
Before Reading
Global Reading
Detailed Reading
After Reading
■
Tips:
Directions: Watch the video and write down the kinds of energy mentioned.
Small-scale systems tap the energy of flowing water. These are not to be confused with big dam projects which totally transform ecosystems, wreaking environmental havoc.
MICRO-HYDRO:
flowing water
solar, chemical
reaction,
nuclear
Before
Before Reading
Global Reading
Detailed Reading
After Reading
WINDPOWER :
FOSSIL FUELS :
An ancient source undergoing a
revival with modern turbine technology
Derived from long-anic and
animal matter. Oil, coal, and natural gas
are all fossil fuels.
Before
Before Reading
Global Reading
Detailed Reading
After Reading
SOLAR ENERGY:
The sun’s power can be harnessed in various ways: by using photovoltaic cells to generate electricity directly; by using thermal collectors to make steam to generate electricity; by using passive solar materials that maximize or retain the sun’s heat.
BIOMASS:
Biomass is vegetal anic material - including dung and plants - and biofuels are the solid or liquid or gaseous fuels that derive from it. Wood, methane and alcohol are all biofuels.
Before
Before Reading
Global Reading
Detailed Reading
After Reading
NUCLEAR ENERGY:
Currently produced by ”fission”. An atom