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Identify theseForms of energy
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EnergyObjectives
Recap the different types of energy and energy transformations.
Outcomes
C: Describe different types of energy.
B: Explain energy transformations from one type
of energy to another.
A: Evaluate useful and waste energy transfers and the impact
this has on our energy needs.
Key terms: Energy, useful, waste, efficiency, transformation.
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Different types of energy
1. ___________
2. ___________
3. ___________
4. ___________
5. ___________
6. ___________
7. ___________
8. ___________
9. ___________
LightSoundKineticNuclearElectricalChemicalElastic
Gravitational
Heat / Thermal
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Useful energy transfers
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Identifying energy transfers
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200 J Electrical energy
INPUT
10 J (useful)Light energy OUTPUT
190 J (waste
ful)
Heat energy OUTPUT
Efficiency of a Light Bulb
Efficiency = Useful Energy Output Total Energy Input
Then multiply this by one 100 to find a percentage!!!
Task:• Calculate the efficiency of the
light bulb?
• If it cost you £1 per day to use the light bulb. How much money is wasted by heat each week?
Extension:
Any ideas to save wasted heat energy??
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Efficiency questions
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EnergyTask
In groups produce a poster outlining:
• Different forms of energy
• Energy transformations
• Energy efficiency
• Law of conservation of energy
Outcomes
C: Describe different types of energy.
B: Explain energy transformations from one type
of energy to another.
A: Evaluate useful and waste energy transfers and the impact
this has on our energy needs.
Key terms: Energy, useful, waste, efficiency, transformation.