Global warming

Unit 19 Global Warming Heating up the Earth = GLOBAL WARNING?

GH effect A natural phenomenon where gases in Earth’s atmosphere trap heat from the sun to warm the surface and lower atmosphere Enhanced GH effect Accelerated GH effect due to rapid increase in GH gases in the atmosphere, trapping more heat from the sun

. The atmosphere is the layer of air around the earth to keep it warm . Allows the right amount of sun’s heat in, and doesn’t allow too much to escape. The clothes are the layer around our body to keep us warm Allows the body to maintain a certain temperature. Relationship of Body & Clothes Relationship of Earth & Atmosphere

Earth is warmed by : 1. Itself – gives out heat 2. Heat from sun 3. Trapped heat from Greenhouse effect A natural Greenhouse effect allows the sun’s rays to enter earth and keep the heat inside Necessary to keep Earth warm and livable. Warming of the Body Warming of the Earth We are warmed by 1. Body gives out heat 2. Heat from the sun 3.Trapped heat from the clothes

When there’s MORE greenhouse gases in atmosphere unnecessarily Due to industrialization More heat being trapped Result = Global Warming (hotter earth) Extra Warming of the Body ENHANCED Greenhouse effect ,[object Object],[object Object],[object Object]

Heat that reaches earth Heat that are reflected back by earth & atmosphere Heat is trapped by GH gases Heat given out from the earth Greenhouse gases in the atmosphere Solar radiation from the Sun to Earth

Greenhouse (Cold countries) ,[object Object],[object Object]

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Enhanced Greenhouse Effect Yellow layer = Extra Greenhouse Gases / Air pollutants

Causes of Greenhouse effect 72% (Highest percentage of greenhouse gas) ,[object Object],[object Object],Source What is the % in the atmosphere? Carbon Dioxide Greenhouse Gases

Causes of Greenhouse effect 13% ,[object Object],[object Object],Source What is the % in the atmosphere? Chlorofluorocarbons (CFC) Greenhouse Gases

Causes of Greenhouse effect 10% ,[object Object],[object Object],[object Object],Source What is the % in the atmosphere? Methane Greenhouse Gases

Causes of Greenhouse effect Nitrous Oxide Greenhouse Gases ,[object Object],[object Object],Source 5% Proportion in atmosphere

1. Get into groups of 4 2. Create a drawing with the following items in it a. Weather b. Plants c. People d. Animals e. Sea WRITE DOWN THE IMPACTS OF GLOBAL WARMING ON EACH OF THEM Consequences of Global warming

[object Object],[object Object],[object Object],Consequences of Global Warming Rising sea levels - Sea water expand - Ice caps melt - Flooding of cities and islands Changes in weather conditions - Increased temperature -Global climate change e.g. more droughts & floods Impact on plants Amount of rainfall affects food supply Impact on animals Need to migrate to cooler areas for survival

[object Object],Refer to text page 136 and 137 to find out more (a)Agriculture (b)Fire (c)Industry (d)Transport

[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

Pollution news articles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Name the causes of Acid Rain 1. Burning of coal 2. Industrial pollutants 3. Lightning 4. Aerosols ,[object Object],[object Object],[object Object]

What is the purpose of the Semakau landfill? ,[object Object],[object Object],[object Object]

It’s Simpsons’ Time ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.youtube.com/watch?v=zyTm_0D0uS8 Learning Video . From “An Inconvenient Truth” – Global Warming cartoon

Solutions to Global warming (Individual level) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Use alternate sources of energy promote vehicles that run on alternative fuel e.g. Hybrid cars in Germany powered by petrol and electric batteries = consume less fuel / release less pollutants Enforcing laws & regulations - strict laws on amount of pollutants emitted by vehicles, industries, power stations Solutions to Global warming (National level)

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Solutions to Global warming (International level)

Together, we can reduce demand for meat products and REDUCE METHANE! So eat LESS MEAT! More Veggies… It’s getting hot in Kranji Pig Farm ! Global Warning Do you know that Methane is found in food supply and livestock? It contributes to Greenhouse effect which causes GLOBAL WARMING! Advertisement for Kranji pig farm

Global warming

Global warming

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