What is the measurement for energy?
Joules (symbol: J)
What is the definition for energy?
Energy is the ability to do work or move something
Can i state the law of conservation for energy?
Energy can neither be created or destroyed but but it can change from one form to another
Can i give 9 examples of different forms of energy?
- Fossil fuels
- Solar energy
- Wind energy
- Tidal energy
- Hydroelectric energy
- Wave energy
- Biomass energy
- Geothermal energy
- Nuclear energy
What is a non-renewable form of energy?
Non- renewable sources get used up i.e fossil fuels
Do i know the unit for work?
Joules (symbol: J)
Can i give examples of stored energy?
- potential energy
- nuclear energy
- chemical energy
Can i give six examples of energy in action?
- electrical
- magnetic
- kinetic
- heat
- light
- sound
Can i give two advantages of fossil fuels?
- electricity supply is guaranteed (once fuel is there)
- fuel can be stored, extra demand can be catered for
- relatively cheap
Can i give two disadvantages of fossil fuels?
- limited supply available
- will get more expensive as supplies dwindle
- it pollutes the air, produces acid rain and increases the greenhouse effect
Can i give two advantages of solar energy?
- Free supply will never run out
- no pollution
- solar panels or cells on roof do not interfere with anything
Can i give two disadvantages of solar energy?
- initial costs can be very high
- least/no energy at night and in winter when its most needed
- solar energy is spread over a wide area and is difficult to collect
Can i give two advantages of wind energy?
- free supply will never run out
- no pollution. Land with wind turbines can still be used for farming
- low level technology costs about 1/5 of what it cost 20 years ago
Can i give two disadvantages of wind energy?
- some people thing wind turbines are noisy and unsightly
- many turbines are needed produce as much electricity as one modern power station
- windy sights are essential, the supply is variable and unreliable
Can i give two advantages of hydroelectric energy?
- Free supply will never run out
- no pollution and can store energy from other sources
- can be switched on in a matter of seconds
Give two disadvantages of hydroelectric energy?
- only a small number of suitable sites
- initial costs are high
- land have to be flooded to make reservoirs
What method is used for the experiment to show the conversion of CHEMICAL to ELECTRICAL to KINETIC?
1) place the resistance wire under the cold water in the beaker
2) connect the resistance wire through to the battery and plug it in
3) place the thermometer in the cold water and note the temperature
4) note the temperature every two minutes
5) compare and look at results
What method is used for the experiment to show the conversion of ELECTRICAL to MAGNETIC to HEAT energy?
1) wind the insulated wire closely around the nail
2) connect the two wire ends to the battery
3) place some loose thumbtacks/paperclips under the nail
4) switch on the current
5) note what happens
6) turn iff the current
7) nite what happens
What method is used for the experiment to show the conversion of LIGHT to ELECTRIC to KINETIC energy?
1) connect the solar cell to the fan
2) place the solar cell under a beam of strong sunlight
3) note what happens
4) block the sunlight from the solar cell
5) again note what happens
What are the 3 forms of energy we learnt about thats original sourec isn’t the sun?
1) tidal energy (moon and sun)
2) nuclear energy (nuclei in atoms: splitting in fission joining in fusion)
3) geothermal energy (earth: the decay of radioactive material in the earths core
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Volume, Density, Area, Speed, Time, Mass40
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Energy20
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Materials, Elements, Compounds And mixtures41
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States of Matter and Particle Theory0
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Cells30
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Cells33
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Living Things19
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Food And Diet31
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Food And Diet Table Pg 1921
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Separating Mixtures13
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Solutions12
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More Knowledge15
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The Circulatory System0
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To Test For The Presence Of ____3
