Identify theseForms of energy

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.

Different types of energy

1. ___________

2. ___________

3. ___________

4. ___________

5. ___________

6. ___________

7. ___________

8. ___________

9. ___________

LightSoundKineticNuclearElectricalChemicalElastic

Gravitational

Heat / Thermal

Useful energy transfers

Identifying energy transfers

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??

Efficiency questions

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.