Unit 4 Global warming Unit 4 Global warming. Look at the pictures and what do you know about global...
-
Upload
shana-daniels -
Category
Documents
-
view
233 -
download
0
Transcript of Unit 4 Global warming Unit 4 Global warming. Look at the pictures and what do you know about global...
Unit 4
Global warming
Unit 4
Global warming
Look at the pictures and what do you know about global warming.
What causes the global warming?
Human activity or a random but
natural phenomenon?What things do we use energy for?
Think about:
Things that use energy around us or at any other places:
Where does all this energy come from?
From the following pictures, you will know where all this energy comes from.
wind power a coal power station
an oil refinery a nuclear power plant
solar panels a hydroelectric dam
Renewable or non-renewable?√
Renewable or non-renewable?√
A greenhouse
A greenhouse
is made of ______ and
is used for growing
_______, especially
during _____ weather.
What is a greenhouse made of and used for?
glass
plants
cold
The air inside is warm because the glass
_______ the heat from the sun and keeps
it from____________. This makes the
greenhouse heat ____ and so the plants
can grow throughout the
________ period.
How does a greenhouse work?
trapsescaping
cold
up
Now can you connect global warming
with greenhouse and think of the
relationship between them? Maybe
you can understand why we call
global warming “greenhouse effect”.
What will you do every day to help reduce greenhouse gases?
Taking public transport like busesTaking public transport like busescan reduce greenhouse gas emissions.can reduce greenhouse gas emissions.
And taking train can also help a And taking train can also help a reduction of greenhouse gas. reduction of greenhouse gas.
The recycling symbol
Buy the recycled products
Recycled products
Recycling the bottles
Paper recycling
Your paper could become part of a road or race-
track.
using low-flow shower heads
buying energy-efficient light bulbs
replace with
“ 低碳生活” (low-carbon life)
“ 低碳生活” (low-carbon life) ,就是指生活作息时所耗用的能量要尽力减少,从而减低碳,特别是二氧化碳的排放量,从而减少对大气的污染,减缓生态恶化,主要是从节电节气和回收三个环节来改变生活细节。
Save energy! Protect the earth!
Homework1. Look up the new words and expressions of the text in the dictio
nary.2. Preview Reading THE EARTH IS BECOMING WA
RMER — BUT DOES IT MATTER?