Other questions in this quiz

2. radio, computer,phone and a tv waste WHAT energy

  • heat energy
  • gravitational energy
  • sound energy
  • kinetic energy

3. Energy is only useful when it can be WHAT

  • melted
  • forzen
  • transffered
  • boiled

4. all devices waste energy, so the efficiency is never what percent

  • 100%
  • 50%
  • 75%
  • 25%

5. Energy can be transferred but it can not be WHAT

  • made better
  • destroyed
  • buit up
  • divided out

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