global warming extreme weather polar icebergs melting worldwide effects of el nino -- changes in a...
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Yeung Ming Him Timothy
Kowloon Methodist School (P.M.)
Primary 4B
Climate change –
What can we do ?
Global warming
• Extreme weather
• Polar icebergs melting
• Worldwide effects of El Nino -- changes in a huge ocean current
Earth’s greenhouse effect• Earth is like a greenhouse, but
with gas rather than glass. • Some of the Sun’s non-heat
energy is changed into heat, and trapped by greenhouse gases in the atmosphere.
• We pump huge amounts of heat-trapping gases into the air, and cause global warming.
Carbon dioxide49%
Nitrous oxide6%
Ozone12%
Methane18%
CFCs15%
Composition of the heat-trapping gases in the atmosphere
Carbon dioxide is the main factor for global warming
What can we do?Reduce Carbon dioxide
• Burn less fossil fuel burning fossil fuel produce carbon dioxide
• Have more trees trees can turn carbon dioxide to oxygen
What can children do?Reduce Carbon dioxide
• Switch off lights which are not in use!• Have a shower rather than have a bath.
A five-minute shower uses only two-fifths of the hot water needed for a bath.
• Turn off computers and TVs rather than standby mode.
• Walk, cycle or take the bus.• Use less air-conditioning
What can schools do?Reduce Carbon dioxide
• Educate children
• Homework done electronically (save paper)
• Green Activities:
eg. tree planting trip, paper recycle, non-air-condition day, etc.
What can the Government do?Reduce Carbon dioxide
• building more cycling paths
• develop more railway systems
• high tax on private cars
• limit the no. of neon lights
• promote renewable energy
fuel cell, solar energy, wind, hydroelectricity
• Laws -- eg. If someone wants neon lights, he should plant some trees or use solar energy in return,
Have more trees !Who can help ?
EVERYONE CAN
• Government should plant on road sides
• Estate developers should set up more green lands
• Everyone can have some plants at home
• Everyone should use fewer paper
What will be our Future?
• Climate disaster or fine weather ?
Would our future become the movie The Day after Tomorrow, in which the world is doomed ?
Small actions do count !!
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