Across
- 2. stored energy
- 3. energy of motion
- 4. illustration of forces acting on an object
- 7. basic building block of matter
- 9. rate at which energy is used
- 12. the "stuff" that makes up all materials and substances
- 13. a subatomic particle that is positively charged
- 16. a subatomic particle that has no charge
- 18. movement of energy
- 19. found in al living things and makes up organic comp
- 20. interaction between two objects that physically come in contact
- 22. ability to do work
Down
- 1. conversion of energy from one form to another
- 5. number of protons found in an element
- 6. energy carried by light waves
- 8. vital to animals abundant in Earth's crust
- 10. a table that shows the four major elements
- 11. a colorless, odorless gas, has an atomic number of 1
- 14. combined result of all forces acting on an object
- 15. shiny and has a metallic appearance, semi conductor
- 17. a type of atom with the same number of protons
- 21. energy carried by sound waves