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Test

Energy resources and energy transfer

Usuario eliminado 13 preguntas Actualizado el 4 abr 2019

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Preguntas del test (13)

  1. 1Which of these are forms of energy waiting to be turned into one of the other forms? (Tick all that apply)
    1. AThermal
    2. BChemical potential
    3. CGravitational potential
    4. DKinetic
    5. EElectrical
    6. FLight
    7. GElastic potential
    8. HNuclear
    9. ISound
  2. 2What is the principle of the conservation of energy?
    1. AEnergy can never be created or destroyed; it can only be converted from one form to another.
    2. BEnergy can be created or destroyed; it can also be converted from one form to another.
  3. 3Describe the energy transfer in this picture.Imagen de la pregunta 3
    1. Akinetic ---> electrical
    2. Belectrical ---> sound ---> light
    3. Cgravitational potential ---> kinetic ---> electrical
    4. Dgravitational potential ---> electrical ---> sound
  4. 4A light bulb has a total energy input of 200J. 190J of this is wasted energy. Work out the energy efficiency.
    1. A10%
    2. B5%
    3. C90%
  5. 5Draw a Sankey diagram for a candle which wastes most of its energy as heat.
    1. AImagen de la opción A
    2. BImagen de la opción B
  6. 6Tick all of the true statements.
    1. AA device which transfers one form of energy into another is called a transducer.
    2. BEnergy is normally wasted as heat and sound.
    3. CWasted energy dissipates into the surroundings.
    4. DDissipated energy cannot be re-used.
  7. 7Which type of heat energy transfer only takes place in fluids and involves warmer, less dense regions of fluid moving upwards and being replaced by colder, sinking fluids?
    1. AConduction
    2. BConvection
    3. CRadiation
  8. 8All types of energy require particles to be transferred.
    1. AVerdadero
    2. BFalso
  9. 9Which of these loses energy more quickly?
    1. AA bright, shiny surface
    2. BA dull, black surface
  10. 10Which features of a vacuum flask prevent heat loss by conduction?
    1. AA thin vacuum between the walls
    2. BSilvered walls
    3. CCork or plastic stopper

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El usuario ha eliminado su información de asignaturas Test sobre Energy resources and energy transfer, creado por Usuario eliminado el 04/04/2019.
Autor
Usuario eliminado
Idioma
English
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44
Historial
Creado el 4 abr 2019 · actualizado el 4 abr 2019

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