Energy

3. Uranium and plutonium are .......... fuels.
5. When energy travels from a hotter place to a colder place through a solid or liquid.
6. The only way to transfer heat through vacuum.
7. The transfer of heat energy through a liquid or gas by hotter fluid moving up.
9. The principle of ............ of energy tells us it cannot be created or lost.
10. When we harvest energy from the Sun, this is called ......... energy.
11. Energy transferred from hot to cold objects.
12. Wind and water power are examples of ......... energy resources.
14. Oil, coal and natural gas are ........... fuels.
15. Energy stored in stretched or compressed objects.

1. The energy of moving objects.
2. The energy objects have because of gravity is called gravitational ............ energy.
4. The energy stored in food, fuels, batteries.
8. An energy resource that cannot be replaced quickly.
13. The unit for measuring energy.