Across
- 4. where animals live (not the zoo)
- 5. pushes electrical current around a circuit
- 7. a simple circuit is made of these
- 11. always come from sources
- 12. keep their shape
- 13. sound travels because ________ travel
- 14. the phases are solid liquid and gas
Down
- 1. quickly moving back and forth
- 2. we need it when we feel sick
- 3. when we use something again
- 6. can change shape easily
- 8. a lot of bones
- 9. can be any shape
- 10. when people make things dirty