1. Guess the title
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2. 03/12/2018
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Earth and Atmosphere

3. ALL Name the main gases in the Earth Atmosphere today.
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Learning Objective What are the main gases in the Earth’s atmosphere today?
Learning Outcomes
ALL Name the main gases in the Earth Atmosphere today.
MOST Interpret data to construct a graphical display of the relative proportions of the main gases in the Earth’s atmosphere .
SOME Analyse data to look at recent changes in / make predictions on the proportions of carbon dioxide in the Atmosphere

4. The Earth’s Resources
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Humans are using up the Earth’s natural resources. Here are some facts:
Resource
Facts
Oil
Current (known) sources will run out by 2060
Gas
Current (known) sources will run out by 2070
Coal
Due to run out by 2200
Phosphorus
Needed for plant growth. Reserves are due to run out in the next 100 years
Fresh water
By 2025, 1.8 billion people will live in areas of water scarcity

5. Reducing Pollution by Recycling
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Reasons why recycling is good
Reasons why recycling is bad
Still requires energy
Reduces demand for raw materials
Recycling
Paper, metal and plastic can be recycled
Requires money to sort and recycle
What is the more obvious option?
Reduces the amount of rubbish going to landfill sites

6. The Carbon Cycle CO2 in air 2. Plants release CO2 through respiration
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2. Plants release CO2 through respiration
Burning fossil fuels also releases CO2
CO2 in air
1. CO2 is taken in by plants for photosynthesis and turned into glucose
6. These microbes also release CO2 through respiration
4. Animals release CO2 through respiration
5. Animals (and plants) die and their remains are fed on by microbes
3. The carbon taken in by plants is then eaten by animals and the animals that eat them

7. The Earth’s Atmosphere
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Present day atmosphere contains 78% nitrogen, 21% oxygen, 1% noble gases and about 0.03% CO2
Carbon dioxide, water vapour
Oxygen
Nitrogen
Noble gases

8. Challenge: convert the % into degrees for your pie chart
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Challenge: convert the % into degrees for your pie chart
How many degrees does a circle have?
How can you convert % into degrees?
Added by MGN. Please hide it if not useful
78% of nitrogen
21 % of oxygen
1 % others

9. Carbon Dioxide and Global Warming
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Global levels of Carbon Dioxide in PPM
Is there a link?