Energy Types 01
Moving energy is kinetic energy.

Energy Types 01

What do you know about energy types? Find out in this KS3 Science quiz. Physicist Hermann von Helmholtz established that all forms of energy are equivalent - energy in one form can disappear but the same amount of energy will appear in another form. As one type of energy is transferred into another, it is often possible to make things happen.

An example of this is a hydroelectric power station. Water in a reservoir high in the mountains has more gravitational potential energy than when it is lower down. As it flows downhill, the gravitational potential energy is transformed into kinetic energy. The kinetic energy can be used to turn a turbine connected to a generator. This changes the kinetic energy into electrical energy which is really useful.

Some energy forms can be stored but others can't.

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Electrical energy can be stored for a short while in a device called a capacitor but if it is changed into chemical energy in a accumulator (rechargeable battery), it can be stored for longer periods of time. Potential energy is a good way of storing energy too - there is gravitational potential energy (the energy of where an object is) and elastic potential energy (the energy contained in an object that has been twisted or bent without breaking it).

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  1. Which type of energy is stored in a battery?
    Hope you weren't tempted by electrical!
  2. Which type of energy is stored energy due to gravity?
    If you move an object from one shelf to a higher shelf, it will have more potential energy due to gravity
  3. Which of the following is NOT a type of energy?
    A change in temperature of an object tells you if it is gaining or losing thermal energy
  4. The unit of energy is:
    It was named after physicist J.P. Joule (1818-1889)
  5. Which type of energy is given out by a luminous object?
    This is often achieved by making an object very hot but not always - a glow worm uses a chemical reaction to produce light
  6. The main types of energy released by a burning candle are:
    Thermal and heat energy are the same
  7. Which type of energy is moving energy?
    If two objects have the same mass, the one that is moving faster will have more kinetic energy
  8. Which type of energy is stored energy in a stretched rubber band?
    Also called elastic potential energy
  9. Useful energy that flows along a wire is:
    Can you imagine life without electrical energy?
  10. The main type of energy released by a coiled spring is:
    It moves!

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