Things that use energy in your home
light heating television cassette player
video player computer fridge stove
washing machine
hairdryer
Sources of energy
carnotite（钒钾铀矿）, pictured here.
Guess it!
What source of energy?
Geysers(间歇泉)
Geothermal (地热的) Energy Plant
Discuss
An energy source is “renewable” when supplies of it never run out and “nonrenewable” when one day they will run out. Which energy sources on your list are renewable and which are non-renewable?
Greenhouse gases!
What’s greenhouse gases effect?
Greenhouse gases perform the same function as the glass in a greenhouse --- They trap the heat of the sun and keep the air surrounding the earth warm. It is called the greenhouse effect.
Windmills
Wind energy is used as power to produce electricity .
The coal power stations
where electricity is produced by burning coals.
in which oil is refined and made pure.
The Hydro- are used to keep back electric dams water and raise its level
for irrigation or for producing electricity, etc.
Uranium Ore (铀矿石)
The element uranium does not occur in pure form in nature but is found in minerals such as
Renewable/nonrenewable
non-renewable non-renewable non-renewable
renewable
renewable
non-renewable
renewable renewable renewable
renewable
What are these buildings made of and what is their purpose?
energy sources
cassette player micro-wave oven
heating
fridge
things that
light
use in
eysnoteourrvgey
hairdryer
home
television computer
Байду номын сангаасstove
video player washing machine
The Earth Is Becoming Warmer
– But Does It Matter?
Fast Reading
Glance at the article and answer the question.
What is the structure of a magazine like this and how is the text organized?
The Oil Refineries
A nuclear power plant
a facility designed to convert nuclear energy into electricity.
Solar panels
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.
They are made of glass and plants can grow in it when it is cold outside.
How does it work?
The glass traps the heat from the sun, making the air warm so that plants can grow better.
Unit 4 Global Warming
We 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.
coal oil natural gas wind (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)