Karteikarten
Physics Revision - Energy
Karten in diesem Stapel (43)
- 1Energy is a measure of.....what an object can do
- 2It is measured in....Joules (J)
- 3Energy can be roughly divided into 10 types:Light , gravitational potential)
Thermal (moving heat)
Internal (warmth)
sound , chemical potential (from chemical reactions) , nuclear potential (from nuclear reactions)
elastic potential (from stretching)
electrical potential
kinetic (moving objects) - 4The law of conservation of Energy is..*Energy cannot be made, created or destroyed
*Energy can only be transformed from one type to another - 5input energy =output energy
- 6Sometimes numbers are included ; electrical (100J) = light (75J) and thermal .......(25J)
- 7Energy is ....... a measure of what an object can do
- 8Energy is transferred......from one type to another
- 9Energy cannot be ......created or destroyed
- 10Work done, or work is ...... a measure of energy
- 11As it is energy, the unit is.....joules (J)
- 12Work done calculates ......how much energy is needed to move an object a distance (with a force)
- 13work done = E=force x distance
F x d - 14The force is measured in ....newtons (N)
- 15... and the distance in...metres (m)
- 16Force is measured using a ...... newtonmetre
- 17Distance is measured using a ...... ruler
- 18Power calculates ..the rate at which energy is delivered
- 19power = P=energy / time
E/t - 20The unit of power is ...... watts (W)
- 21An energy resource is......something that can produce heat, power life, move objects, or produce electricity
- 22Renewable energy is...... from an energy resource that will not run out. More of it is continuously made faster than we use it.
- 23Non-renewable energy is......from an energy resource that is used faster than more of the energy resource can be formed. One day the resource will run out.
- 24Fossil fuels are formed from....plants and/or animals
- 25....That have died a long time ago and have been exposed to high....heat and pressure
- 26...Under the Earth's crust for...hundred's of millions of years
- 27Two main reasons we are using fossil fuels less are:-they are non-renewable meaning one day we shall run out of them
-they produce carbon dioxide when burnt. This gas contributes to global warming. - 28Coal is a solid fuel it is burnt in power stations converting .......... potential energy into thermal... chemical ...
- 29....This then boils water, which turns to ...steam
- 30......The steam turns a turbine, which turns a generator, producing ............ energy.electrical
- 31Some advantages of using coal are: (3)-It is cheaper to build and run (cheap fuel)
-Abundant (available when needed)
-Can be found almost anywhere - 32Some disadvantages of using coal are: (4)-Nonrenewable (around 150 years left)
-Cost will increase over time
-Produces carbon dioxide when burnt
-Produces sulphur dioxide which causes acid rain - 33Oil is a liquid fuel. It is burnt in power stations, converting .................. potential energy into thermal energy.chemical
- 34This then boils water, which turns to ...........steam
- 35The steam turns a turbine, which turns a ......................., producing electrical energy.generator
- 36Advantages of using Oil: (4)-Cheaper to build and run (cheap fuel)
-abundant ( available when needed)
-can be found almost anywhere
-produces less sulphur dioxide - 37Disadvantages of using oil: (3)-nonrenewable (around 53 years left)
-cost will increase over time.
-produces greenhouse gases when burnt - 38Natural gas is a ..................gas fuel
- 39It is burnt in power stations, converting chemical potential energy into .................... energy.thermal
- 40This then ................... water, which turns to steam.boils
- 41This steam turns a ............................, which turns a generator, producing electrical energy.turbine
- 42Advantages of using gas: (4)-Cheaper to build and ran (cheap fuel)
-abundant (available when needed)
-can be found almost anywhere.
-Produces less sulphur dioxide. - 43Disadvantages of using gas: (4)-Nonrenewable (about 75 years left)
-Cost will increase over time
-Produces Carbon Dioxide when burnt.
-Produces sulphur dioxide which causes acid rain
Informationen
- Beschreibung
- A wide variety of flashcards about the topic of Energy - the building blocks of physics
- Erstellt von
- Martha Simpkins
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