Across
- 2. Having neither acid nor alkaline qualities, pH of 7.
- 6. Mass per unit volume.
- 8. The tissues outside the vascular tissue overlying a woody stem.
- 10. Fibrous, partly decayed fragments of vascular plants that retain enough structure so that the peat can be identified as originating from certain plants (e.g., sphagnum peat or sedge peat).
- 13. Soil or soil-like material in which plants are grown.
- 14. A mineral, or minerals, classified with the micas, which with treatment at high temperatures, expands into scales, and becomes a loose, absorbent mass.
- 17. A porous or spongy form of volcanic glass.
- 18. A popular water culture technique where the nutrient solution is continuously flowing at the tips of the plant's roots set in a medium.
- 19. Fibers made of natural or synthetic minerals used as a media for growing plants in a hydroponic system.
- 20. A system for the measurement of volume or space in cubic units.
Down
- 1. The quantity of three–dimensional space enclosed by some closed boundary.
- 3. A hydroponic system that uses media to absorb the nutrient solution and hold it for the plant.
- 4. Growing plants in a nutrient solution and a media other than soil.
- 5. Any organic or inorganic material added to soil or water to provide plant nutrients and to increase the growth, yield, quantity, or nutritive value to the plants grown therein.
- 7. A hydroponic system where the roots are in constant contact with the nutrient solution where the media may not be as absorbent.
- 9. The removal of surplus ground or surface water by artificial means.
- 11. A system of hydroponics that involves misting roots with a nutrient solution.
- 12. The process by which air in the soil is replenished by air from the atmosphere.
- 15. oxygen The amount of oxygen found in water or solution.
- 16. A volcanic glass having numerous concentric cracks that give rise to perlitic structure. Used in synthetic potting media mix.
- 21. A measure of the amount of matter in an object.