physics energy cont.

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  • Created by: Izzybc
  • Created on: 31-05-15 19:37
Name the 9 different forms of energy
1) Kinetic 2) Heat 3) Light 4) Gravitational potential 5) Chemical 6) Sound 7) Electrical 8) Elastic (or strain) 9) Nuclear
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Which form of energy is food?
chemical energy
2 of 14
Where do cars get their chemical energy?
from fuel such as petrol
3 of 14
What sort of energy does a battery use up?
A battery uses up chemical energy from the chemicals inside it to produce an electric current
4 of 14
Complete this sentence: The higher an object is lifted...
...the more gravitational potential energy it is given
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Give the energy transfers of the following: a) an electric fire b) a falling object c) a dynamo d) a plant?
a) electrical -> heat b) gravitational potential -> kinetic c) kinetic -> electric d) light -> chemical
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e) a very hot object, f) a glow worm, g) a sound absorbing cloth, h) a microphone
e) heat -> light, f) chemical -> light, g) sound -> heat h) sound-> electrical
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What is the useful energy of a TV?
Light and sound
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What is the waste form of energy for a TV?
heat
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How is the TV designed to let out waste energy easily?
It has heat vents on the top of the set which increse the surface area to maximise energy transfer and prevent the TV from overheating
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Fill in the mssing gaps: Energy cannot be ............ or .............. but can be ........... from ....... ......... to ..............
Energy cannot be created or destroyed, but can be converted from one form to another
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In which units is energy measured in?
Joules
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How do you work out the efficiency of a device?
Useful energy transferred over total energy transferred
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Bruce is a weightlifter. He had porridge for breakfast. Describe how the chemical energy in his porridge is converted when he lifts the bar.
The chemical energy is converted into kinetic energy, then into gravitational energy
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Other cards in this set

Card 2

Front

Which form of energy is food?

Back

chemical energy

Card 3

Front

Where do cars get their chemical energy?

Back

Preview of the front of card 3

Card 4

Front

What sort of energy does a battery use up?

Back

Preview of the front of card 4

Card 5

Front

Complete this sentence: The higher an object is lifted...

Back

Preview of the front of card 5
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