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Energy Transfers 01
When a cyclist brakes thermal (heat) energy is produced by friction.

Energy Transfers 01

Revise what you know about kinetic energy. Where would you find some chemical energy?

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FIND OUT ABOUT SUBSCRIPTIONS

1.
Which is the MAIN energy transfer taking place when a candle burns?
Chemical → light
Chemical → sound
Light → chemical
Thermal → chemical
Thermal (heat) energy is also produced
2.
Which is the MAIN energy transfer when a ball rolls UP a ramp?
Kinetic → potential
Kinetic → thermal
Potential → kinetic
Potential → sound
As the ball rolls upwards, it gains potential energy but the movement gradually slows down as the kinetic energy is transferred
3.
Which is the MAIN energy transfer when a wind-up clockwork toy is released?
Elastic → kinetic
Elastic → potential
Kinetic → elastic
Kinetic → sound
The spring unwinds because of the stored elastic potential energy it contains. As the spring does this, its movement can be used to make the toy do things
4.
Which is the MAIN energy transfer in a loudspeaker?
Electrical → sound
Electrical → thermal
Sound → electrical
Sound → thermal
The electrical signals vibrate a cone in the loudspeaker to produce sound waves
5.
Which is the MAIN energy transfer when using a microphone?
Electrical → sound
Electrical → thermal
Sound → electrical
Sound → thermal
A microphone converts sound into an electrical signal. This can then be saved to a computer file or amplified and sent through a loudspeaker system so that it can be heard further away
6.
Which is the MAIN energy transfer in a solar cell on a calculator?
Electrial → light
Light → electrical
Light → kinetic
Light → thermal
Solar cells can be used on a much larger scale to generate electricity
7.
Which is the MAIN energy transfer when you drop a ball?
Kinetic → potential
Kinetic → sound
Potential → kinetic
Potential → thermal
The ball has potential (stored) energy due to gravity
8.
Which is the MAIN energy transfer taking place when a gas fire burns?
Chemical → sound
Chemical → thermal
Thermal → chemical
Thermal → light
The energy stored in gas is chemical, light is also produced but is not the main product
9.
Which is the MAIN energy transfer when a light bulb is switched on?
Electrical → light
Electrical → sound
Light → electrical
Light → thermal
Heat energy is also produced but that is wasted
10.
Which is the MAIN energy transfer when a cyclist brakes to stop?
Kinetic → elastic
Kinetic → potential
Kinetic → thermal
Thermal → kinetic
The thermal (heat) energy is produced by friction
You can find more about this topic by visiting BBC Bitesize - Energy

Author:  Sue Davison

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