Other questions in this quiz

2. useful and total energy is measured in...

  • millimetres
  • joules
  • kilograms
  • ounces

3. which one of these is NOT a form of energy

  • nuclear
  • light
  • electrical
  • friction
  • thermal
  • chemical
  • kinetic
  • sound
  • elastic potenial
  • gravitational potential

4. what reduces the efficiency of a machine?

  • eating a burger
  • movement
  • energy losses
  • walking away from it

5. energy efficiency=

  • useful output energy/ total input energy
  • total input energy/ useful output energy
  • total input energy x useful output energy
  • calories eaten for dinner/ price of fish and chips

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