8 can the climate change
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Can Our Climate Change?
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Lesson Objectives
• To know our climate does change• To understand this is the result of
both human and physical reasons• To be able to develop an opinion on
who is to blame
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Temperatures
• Temperature rising, Interactive : here
• You will see different line graphs• For EACH one describe the trend • when was it the highest? • When was is the lowest? • What does it start on?• What does it finish on?
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Who is to blame for the temperature increase?
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Solar Activity
• Also how much heat the sun gives us changes, affecting our climate
• here
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The Earth’s Orbit
• How close to the sun we are affects our climate
• here
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Tectonic Movements
• Movements in the earth’s tectonic plates will change the ocean currents. This in turn will change the climate of some areas.
• here
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Volcanic Activity
• Volcanoes erupt on a regular basis
• They blast ash and dust into our atmosphere, reflecting the sun’s energy
• They also release huge quantities of CO²
• here
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Reflection from the ice
• Huge ice sheets can cover large areas of the Earth. The white colour reflects the sun’s energy
• here
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Industrial activity
• Burning fossil fuels releases carbon dioxide into the atmosphere
• They are used in power stations to create electricity
• HereFossil fuels are coal, gas and oilThey are the remains of living plants and animals from millions of years agoBurning them releases that stored CO²
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Transport
• Cars, trains, planes all use fuel
• Fuel is made from oil
• Using transport that runs on petrol or diesel releases huge quantities of CO²
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Human activity
• Humans breath in oxygen, but breathe out carbon dioxide
• There are more humans on the planet than have ever lived before
• Over 7 billion people!
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Plenary
• Who is to blame?
• You decide
• Write a paragraph stating, now that you have seen the evidence, who you believe is to blame for our rising temperatures