1
2
3
4
5
6
Across
- 2. The upward force that makes things float in water
- 4. Carefully watching and noting what happens
- 5. A curved piece of glass that bends light
- 6. The smallest piece of matter that makes up everything
Down
- 1. A substance that living things need for energy and growth
- 3. A mountain with an opening that can erupt hot lava