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Soil Vocabulary

Soil Vocabulary. Soil! A natural resource found in our own backyard!! . Soil is the loose material in which plants can grow in the upper layer of Earth. It is made up of rock, humus, air, and water. Soil is made up of 5 important components and has 3 layers!. The 5 Components of Soil. Humus

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Soil Vocabulary

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  1. Soil Vocabulary

  2. Soil! A natural resource found in our own backyard!! Soil is the loose material in which plants can grow in the upper layer of Earth. It is made up of rock, humus, air, and water. Soil is made up of 5 important components and has 3 layers!

  3. The 5 Components of Soil • Humus • Sand • Silt • Clay • Rock

  4. Humus This is decayed (rotten, rotting) plant and animal matter in the soil. It provides nutrients to the soil. k

  5. Sand Sand is made up of small grains of weathered rock. • DOES NOThold water well! • Few nutrients

  6. Silt Made up of very small pieces of broken rock. Sand > Silt > Clay

  7. Clay • Can be red oryellow! • Holds water well! • Contains nutrients! Back

  8. 3 Layers of Soil! • Topsoil • Subsoil • Bedrock

  9. Topsoil • This is the top layer. • It is where animals live and plants grow. • It is a mixture of humus and rock fragments. • It is the best layer for growing plants! Back

  10. Subsoil • Made up mostly of clay • Under the topsoil • Not as good for growing plants

  11. Bedrock This is the third and bottom layer of soil. It is under the subsoil. It is made up of weathered rock and solid rock. The worst part of soil for plant growth.

  12. Nutrients These are the materials that plants and animals need to grow. Do you remember where they can be found in soil? What layer? Which components?

  13. Weathering(breaks down) When rocks and other materials on the Earth’s surface are broken down into smaller pieces by weather, water, and living things. Beach in Corolla, N.C

  14. Weathering of the rocks and stumps in Corolla, N.C.

  15. Erosion(moves it) This is a force that gradually wears away soil and its nutrients. Can be caused by natural elements such as wind, water, and ice. This is because of the flow due to gravity. *Check out this experiment on erosion. Beach in Corolla, N.C

  16. Some more pictures of Erosion! Beach in Corolla, N.C.

  17. Beach in Corolla, N.C.

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