P1 Energy Physics crossword

8. An energy resource that can be replenished whilst it is being used.
10. A system that experiences no net change in its total energy when energy transfers occur within it.
11. The rate at which energy is transferred, or at which work is done.
13. The law that energy can be transferred, stored or dissipated but never created or destroyed.
14. The amount of energy required to raise the temperature of 1kg of a substance by 1°C.
15. The unit used for energy. Equal to the work done when a force of one Newton acts over a distance of one metre.
16. A measure of a spring’s stiffness. The greater the value, the greater the force required to stretch or compress the spring by a given distance.
17. A unit of power. One Watt is equivalent to one joule of work being done in one second.
18. The store of energy that all moving matter has. It is directly proportional to the object’s mass and to the square of its velocity.

1. The store of energy that all raised matter has. It is directly proportional to the mass of the object, the distance that it is risen and the gravitational field strength at that point.
2. Energy that isn’t usefully used for the purpose of the system.
3. Coal, oil and gas.
4. The higher this value is for a given material, the higher the material’s rate of energy transfer via conduction will be.
5. The ratio of useful output energy transfer to total energy input.
6. The store of energy that stretched or compressed objects experience. It is directly proportional to the stiffness constant and to the square of the extension or compression.
7. Energy stored in the bonds of chemical compounds
9. A single, or group, of objects.
12. The energy transferred when a force acts over a distance.