Energy

3. of or relating to the atom, the smallest particle of a chemical element that retains its chemical properties
4. this energy is the heat from the Earth.
5. power derived from the energy of water
7. a big one of these is called a tsunami
9. operated by a machine or machinery.
10. type of energy transfer in which energy flows from a warmer substance or object to a colder one.
11. power from the sun
13. the quantity determining the energy of mass in a gravitational field or of charge in an electric field.
16. describing a gas as particles in random motion

1. a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another
2. vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
6. A chemical substance, also known as a pure substance
8. concerned with electricity
12. the movement of changing place
14. energy made by rubber objects
15. the natural agent that stimulates sight and makes things visible.