Physics 1

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  • Created by: Joods2204
  • Created on: 27-01-16 14:56
Give four ways we can reduce the heat loss from buildings
Aluminium foil behind radiators, cavity wall insulation, double glazing & loft insulation
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Give the 6 different forms of energy
Chemical, Kinetic, Gravitational Potential, Elastic, Electrical and Thermal
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What is chemical energy?
Energy stored in fuel, released when a chemical reaction takes place
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What is kinetic energy?
The energy of a moving object
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What is gravitational potential energy?
Energy of an object due to its position
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What is elastic energy?
The energy stored in a springy object when we stretch/squash it
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What is electrical energy?
Energy transferred by an electric current
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What is thermal energy?
An objects energy due to its temperature.
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What does it mean when energy is transformed?
When energy turns from one form into another
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What happens, in terms of energy, when a roller coaster climbs upwards and races downwards?
Gaings gravitational potential energy when it climbs, Loses gravitational potential energy when it races downwards,
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Give the 4 changes in energy that occurs when a roller coaster decends?
Gravitational potential energy, Kinetic energy, Sound energy, Thermal energy
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What is the conservation of energy?
A rule that says energy cannot be created or destroyed
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What is useful energy?
Energy transferred to where its wanted in the form it is wanted.
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What is wasted energy?
Energy that is not usefully transferred or transformed
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Where does useful and wasted energy both end up being transferred to?
The surroundings, which become warmer
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Why is it bad when energy spreads out?
It gets more and more difficult to use for further energy transfers.
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In terms of energy, what happens when you lift an object
The useful energy from your muscles goes to the object as Gravitational Potential energy
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What is weight measured in?
Newtons, N
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What is energy measured in?
Joules, J
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Equation for working out the efficiency of an object
Efficiency= useful energy transferred by the device / total energy supplied by the device
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What does wasted energy cause
Inefficiency
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Other cards in this set

Card 2

Front

Give the 6 different forms of energy

Back

Chemical, Kinetic, Gravitational Potential, Elastic, Electrical and Thermal

Card 3

Front

What is chemical energy?

Back

Preview of the front of card 3

Card 4

Front

What is kinetic energy?

Back

Preview of the front of card 4

Card 5

Front

What is gravitational potential energy?

Back

Preview of the front of card 5
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