Renewable Non Renewable Energy Resources 110308030738 Phpapp02
Aim-Why should we use renewable resources?. Define Non-Renewable Resources Finite = limited.
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Transcript of Aim-Why should we use renewable resources?. Define Non-Renewable Resources Finite = limited.
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•Aim-Why should we use renewable resources?
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Define Non-Renewable Resources
•Finite = limited
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• Cannot be replenished by natural processes.
• Once we use them, they're gone FOREVER.
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What are some examples of nonrenewable resources?
Fossil Fuels- from the remains of organisms that lived millions of years ago
• Coal• Oil• Natural gas
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What will happen in the future if we keep on using our non-renewable resources?
•We will run out of them
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Define Renewable Resources
• Replaceable • Items that will keep coming back as long as we treat them properly.
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• When we cut down trees for paper, we can replant new trees & get more paper.
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Examples of Renewable Resources:
- Fresh water- Trees- Air- Sun energy- Bio fuel- Hydroelectricity- Solar energy- Wave power- Wind power
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What will happen in the future if we use our renewable resources without
replacing them?
• If they are not replaced as fast as they are used we will run out of them.
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World Fish Catch World Fish Catch per Person
Tot
al C
atch
(mill
ion
tons
)Section 6-2
How can over fishing occur?
Go to Section:
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• Humans are removing too many fish
• Too few fish are remaining to reproduce and replenish the fish population
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Name Alternative Energy Sources
(not fossil fuels):
• Hydroelectricity
• Wind power
• Solar energy
• Nuclear energy
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Each has their own tradeoffs…
•Tradeoffs are advantages and disadvantages
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• Dammed water forms electricity
Advantages:• No air pollution• No use of fossil fuels
What is hydroelectricity?
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Disadvantages
• Disturbs aquatic ecosystems
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What is wind power?• Wind forms electricity
Advantages:• No pollution• Doesn’t use fossil fuels
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Disadvantages
• Wind not constant
• Many turbines needed
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What is solar energy?• Sun
Advantages:•No pollution•Affordable
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Disadvantages
• Nighttime
• Cloudy weather
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What is nuclear energy?
• Splitting of atoms
Advantages:• Water vapor is the
only emission.• Low fuel costs
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Disadvantages
• Radioactive waste (thousands of years)
• High maintenance costs
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Energy conservation is vital!
• We need to conserve energy
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Examples:
• Turn off lights
• Carpooling
• Use fan instead of air conditioner, etc…
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How can we correct human impact on the
environment?
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• Education• Laws• Nature preserves• Reduce• Reuse• Recycle