Transcript Carbon footprint - Nan Hua High School

Sec 2 Sustainable
Environment
Programme
Climate Changes
Details of the programme
 Theme: Climate Change
Food
Water
Climate
Change
Recycling
Energy
Climate Change (15 mins)
 Think-pair-share
 In your pairs, discuss what you have learnt about
climate change in IS lesson
 Questions to be discussed
 What is climate change?
 What causes climate change?
 How can we slow down climate change?
Video on Climate Change
What is an Ecological Footprint?
 Measurement of humanity’s demand on nature
 The amount of land and water area a human
population uses to provide all it takes from
nature
Trigger Activity
 How many human footprints do you think it takes to
produce a T-shirt, a pair of jeans and a pair of
sneakers?
 How much water do you think you need to wash the
clothes you wear per year?
Calculate your ecological footprints
 Log on to the website below and calculate your
ecological footprints
 http://www.footprintnetwork.org/en/index.php/GFN/
page/calculators/
 http://ecoguru.panda.org/#/home
Carbon footprint
What is it?
Why do we need to reduce it?
What is Carbon Footprint?
Total amount of greenhouse gases
produced (e.g. carbon dioxide, CO2)
to directly and indirectly support
human activities in a given time
frame.
Direct Impact from Human Activities
Carbon Emissions from public and
private transport
Burning of fossil fuels to power
energy plants
Indirect Impact from Human
Activities
Distance our food has
to travel before it is
consumed by us
Distance to deliver the
clothes to us
Why is it important to reduce carbon
footprints?
 Carbon dioxide is a form of greenhouse gases.
 Traps the heat on the earth leading to global
warming and ultimately climate changes.
 According to report by WWF (2012), Singapore
is the top carbon emitter in Asia-Pacific
Thinking Question:
Why do you think Singapore is the top carbon emitter in AsiaPacific?
How can we help to reduce carbon
footprints?
 Turn off electrical appliances when not in use e.g.
television, DVD player
 Carbon footprints of common electrical appliacnces
Appliance
Microwave
Oven
kg CO2 per year
39
Washing
Machine
51
Electric Oven
91
Standard Light
Bulb
Low Energy
Light Bulb
Primary TV Plasma
63
11
10
How can we help to reduce carbon
footprints?
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Turn down the water heating setting
Fill washing machine with a full load
Do weekly shopping in a single trip
Fit energy saving light bulbs
Take public transport / car pool
Recycle
Reduce consumption of meat
Pledge to
 At the end of lesson,
 Write down one thing you will do to reduce the carbon
footprint