Science Vocabulary

SOIL VOCABULARY

Learn vocabulariy 

1. Soil: contains weathered rocks (sand,slit,clay), organic matter, air and water
2. Organic matter: decomposition plant and animal materials found in top soil.
3. Soil composition: the ingredients that make up a sample of soil.
4. Nutrients: essential elements required by and organism to grow and reproduce.
5. Decompose: break down of plants, animals, etc. Into soil.
6. Weathering: breakup of rocks caused by chemical or mechanical processes.
7. Pieces of weathered rock: sand, silt and clay.
8. Sand: largest particles, stay at bottom.
9. Silt: medium particles.
10. Clay: small particles, stay towards the top.
11. Soil layers: organic, top soil, sub soil, parent material and bedrock.
12. Top soil: weathered rocks (sand, silt, clay), organic matter, air and water.
13. Sub soil: some chemical found in topsoil, not much organic matter.
14. Parent material: slight broken up bedrock, no plant roots, very little organic matter.
15. Bedrock: hard rock.
16. Texture: how soil feels
17. Grainy: large pieces, sand like.
18. Silky: medium pieces, silt like.
19. Sticky: small pieces, clay like.
20. Color: chocolate brown, reddish brown, yellowish brown, grayish brown.
21. Consistence: how easily soil breaks apart
22. Loose: soil breaks apart when held.
23. Friable: breaks apart with small amount of pressure from one finger.
24. Firm: breaks apart with a lot of pressure from two fingers.