Across
- 2. Positively charged particle of an atom.
- 4. Table where elements are organized by increasing atomic number.
- 5. A fossil fuel refined from natural gas and Petroleum.
- 6. Substance made up of atoms with the same identity.
- 9. Energy sources replenished in a short amount of time.
- 12. Energy sources replenished slower than they are used.
- 13. Looks like a black liquid also known as crude oil.
- 14. Used in nuclear power plants to perform fission which spits the atoms creating energy.
Down
- 1. Energy created by the force of moving water.
- 2. Stored energy and the energy of position.
- 3. Energy of motion; motion of waves, electrons, atoms, molecules, and substances.
- 7. Heat energy from the Earth.
- 8. A solid, black, fossil fuel used for energy.
- 10. Energy from natural matter that was once living.
- 11. A colorless and odorless fossil fuel, made of mostly methane.