Across
- 2. The brain or "control center" of the cell.
- 5. This system provides support, protection, and movement for the body.
- 9. In the body, the blood cells are made in the bone _________.
- 10. The watery liquid that fills the cell.
- 12. The attraction between any two objects in the universe is known as____________ force.
- 15. The type of energy when an object is actively doing something.
- 16. The variable that is being tested or changed
- 17. Based on a lot of evidence
- 18. The type of energy where its maximum is at the top of a hill.
Down
- 1. The type of force that is equal on both sides.
- 3. An _______ force must act on an object for it to CHANGE its motion.
- 4. The force that opposes the motion of two surfaces sliding past each other is called ___________.
- 6. the process by which plants release water through the pores in their leaves is called...
- 7. A scientific ____________ is a statement
- 8. The organelle that belongs in plant cells only
- 11. describes what always happens under certain conditions in nature. It describes what is happening or will happen.
- 13. The system that provides body cells with oxygen and removes carbon dioxide that cells produce as waste.
- 14. The variable that is kept the same to make sure results are caused by the thing being tested.