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Energy

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    Revision for Energy topic
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  • Name the energy change is seen in this
    Chemical energy to Thermal energy
  •  10
  • Name the energy change is seen in this
    Light energy to Chemical energy
  •  10
  • State true or false: Energy is created when a kettle boils.
    False
  •  5
  • State true or false: Wasted energy always becomes heat energy.
    False
  •  5
  • State True or False : A stretched spring stores elastic energy.
    True
  •  5
  • State True or False : When an object falls, its kinetic energy increases and gravitational potential energy decreases.
    True
  •  5
  • Identify the energy store : A soccer ball flying through the air after being kicked.
    Kinetic energy
  •  5
  • Identify the energy store : A drawn bow (ready to shoot an arrow).
    Elastic energy
  •  5
  • Identify the energy store : A charged mobile phone battery.
    Chemical energy
  •  5
  • Identify the energy store : A hot iron straight from the heater.
    Thermal energy
  •  5
  • Fill in the blank
    90J
  •  15
  • Fill in the blank
    75J
  •  15
  • Which is the Input energy?
    Electrical energy
  •  15
  • Which is the wasted energy?
    Heat energy
  •  15
  • What is the total useful energy ?
    55 J
  •  15