Physics P1aKey Words
Fossil fuels
Fuels that are formed   in the Earth overmillions of years from the remains of deadanimals and plants, for example coal, o...
Conduction
The transfer ofthermal energy (heat)from the hotter partsof a substance to the colder parts of thesubstance without the   ...
Convection
•The transfer of thermal energy  (heat) by the movement of a   liquid or gas
Radiation
The transfer ofthermal energy by infra-red waves
Chemical energy
The energy stored in fuel (includingfood). This energy is released whenchemical reactions    take place.
Kinetic energy
The energy of a moving object
Gravitationalpotential energy
The energy of anobject due to its    position
Elastic energy
The energy storedin a springy objectwhen we stretch or     squash it
Electrical energy
The energytransferred by an electric current
Thermal energy
The energy due tothe temperature of     an object
Joules (J)
The unit of energy
Watt (W)
The unit used to measure power. 1 watt is 1 joule ofenergy transferred   each second
Kilowatt (kW)
is equal to 1000      watts
Kilowatt-hour    (kWh)
the energy suppliedto a 1kW device in      1 hour
Transformer
used to increase(step up) or reduce  (step down) the      voltage
Solar cells
transfers energy from the Sunsradiation directly into electricity
Solar panel
these absorb energy from thesuns radiation and   transfer it as  thermal energy       (heat)
Geothermal energy
thermal energy (heat) from inside  the Earth. It is produced from the  natural decay ofradioactive material  including ura...
Non-renewable   energy
energy that gets used up and willeventually run out
Turbine
this is made to turn      by moving  water, steam or wind. It transfers  kinetic (moving)  energy from themoving substance...
Greenhouse effect
the Earth being keptwarm by gases such as carbon dioxide in the atmosphere. Burning fossil fuels produces more carbon diox...
Global warming
the earthstemperature risingdue to the effect   of increased greenhouse gases
Efficiency
the fraction (orpercentage) of theenergy supplied to a device that is     usefully   transferred
Nuclear fuels
radioactivesubstances such as    uranium andplutonium that are used for nuclearfission in a nuclear   power station
Acid rain
rain that is more acidic than usual    because of dissolved sulphurdioxide or nitrogen       oxides
Tidal barrage
a dam built across a river estuary sothat electricity canbe generated from     the tides.
Hydro-electricity
electricitygenerated using the   gravitationalpotential energy of   water stored   behind a dam
End
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P1a key words flashcards

  1. 1. Physics P1aKey Words
  2. 2. Fossil fuels
  3. 3. Fuels that are formed in the Earth overmillions of years from the remains of deadanimals and plants, for example coal, oil and natural gas
  4. 4. Conduction
  5. 5. The transfer ofthermal energy (heat)from the hotter partsof a substance to the colder parts of thesubstance without the substance itself moving.
  6. 6. Convection
  7. 7. •The transfer of thermal energy (heat) by the movement of a liquid or gas
  8. 8. Radiation
  9. 9. The transfer ofthermal energy by infra-red waves
  10. 10. Chemical energy
  11. 11. The energy stored in fuel (includingfood). This energy is released whenchemical reactions take place.
  12. 12. Kinetic energy
  13. 13. The energy of a moving object
  14. 14. Gravitationalpotential energy
  15. 15. The energy of anobject due to its position
  16. 16. Elastic energy
  17. 17. The energy storedin a springy objectwhen we stretch or squash it
  18. 18. Electrical energy
  19. 19. The energytransferred by an electric current
  20. 20. Thermal energy
  21. 21. The energy due tothe temperature of an object
  22. 22. Joules (J)
  23. 23. The unit of energy
  24. 24. Watt (W)
  25. 25. The unit used to measure power. 1 watt is 1 joule ofenergy transferred each second
  26. 26. Kilowatt (kW)
  27. 27. is equal to 1000 watts
  28. 28. Kilowatt-hour (kWh)
  29. 29. the energy suppliedto a 1kW device in 1 hour
  30. 30. Transformer
  31. 31. used to increase(step up) or reduce (step down) the voltage
  32. 32. Solar cells
  33. 33. transfers energy from the Sunsradiation directly into electricity
  34. 34. Solar panel
  35. 35. these absorb energy from thesuns radiation and transfer it as thermal energy (heat)
  36. 36. Geothermal energy
  37. 37. thermal energy (heat) from inside the Earth. It is produced from the natural decay ofradioactive material including uranium
  38. 38. Non-renewable energy
  39. 39. energy that gets used up and willeventually run out
  40. 40. Turbine
  41. 41. this is made to turn by moving water, steam or wind. It transfers kinetic (moving) energy from themoving substance as its own kinetic
  42. 42. Greenhouse effect
  43. 43. the Earth being keptwarm by gases such as carbon dioxide in the atmosphere. Burning fossil fuels produces more carbon dioxide and so increases the greenhouse effect
  44. 44. Global warming
  45. 45. the earthstemperature risingdue to the effect of increased greenhouse gases
  46. 46. Efficiency
  47. 47. the fraction (orpercentage) of theenergy supplied to a device that is usefully transferred
  48. 48. Nuclear fuels
  49. 49. radioactivesubstances such as uranium andplutonium that are used for nuclearfission in a nuclear power station
  50. 50. Acid rain
  51. 51. rain that is more acidic than usual because of dissolved sulphurdioxide or nitrogen oxides
  52. 52. Tidal barrage
  53. 53. a dam built across a river estuary sothat electricity canbe generated from the tides.
  54. 54. Hydro-electricity
  55. 55. electricitygenerated using the gravitationalpotential energy of water stored behind a dam
  56. 56. End

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