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Energy for Life
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07 / Tuesday Kaupapa: Identify and describe different forms of energy Describe examples of simple energy transformation
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What is “Energy”?
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How does it work?
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Energy Energy is what makes things ‘work’.
Examples: car, airplane, cellphone, computer, dog, human, etc. Energy is measured in ______. There are many different forms of energy.
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Energy in different forms
Light energy Heat energy Sound energy Radiation energy Kinetic energy Electrical potential energy Nuclear potential energy Chemical potential energy Elastic potential energy Gravitational potential energy
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Potential Energy = “Stored” Energy
Example: Chemical potential energy is stored in fuel and food Active Energy = “Observed” Energy Example: Sound energy can be heard, light energy can be seen and heat energy can be felt.
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Energy Transformations
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A portable radio playing music Bungee jump
Write down the energy transformation taking place in each of the following examples: 1. A light bulb Electrical energy → Light energy + Heat energy A flying helicopter A child on a swing A portable radio playing music Bungee jump
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Where does electricity come from?
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What have we learnt today?
What is the unit for energy? Name three different forms of ‘active’ energy Name three different forms of ‘potential’ energy Describe the energy transformation in a cellphone
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