Across
- 2. A tiny plant inside a hard cover waiting to grow.
- 4. To change from a liquid to a solid by cooling.
- 5. A material that restricts or blocks the flow of heat or electric current.
- 6. An organ used for breathing air.
- 9. The process plants use to make food using sunlight, carbon dioxide, and water.
- 12. The green pigment in plant leaves that absorbs light energy for photosynthesis.
- 13. The colorful plant part used for reproduction.
- 16. An organism that gets energy by eating other living things.
- 17. A material that easily allows heat or electricity to flow through it.
- 18. An object that pulls iron or steel toward itself.
- 21. The bouncing back of light or sound waves when hitting a surface.
Down
- 1. The basic structural and functional unit of all living organisms.
- 3. The process where a liquid changes into a gas when heated.
- 7. Matter that spreads out to fill a space, like air.
- 8. An organism, usually a green plant, that makes its own food in a food chain.
- 9. The transfer of pollen from the male part of a flower to the female part.
- 10. A state of matter with a fixed shape and volume.
- 11. A dark shape formed when an object blocks light.
- 14. The part of a plant underground that drinks water.
- 15. To change from a solid to a liquid by heating.
- 19. The main part of a plant where food is made.
- 20. A state of matter that flows and takes the shape of its container.