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delacruz charmine (fs s3 i:30-2:30 sat.)

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Charmine Jane Dela Cruz

Soil is defined as the thin layer of loose material on top of bedrock that provides support and nutrients for plant growth. It is a mixture of mineral grains, organic materials, water, and gas that is formed through the weathering of rock by water, weather, and living things. Humus, which is made of decayed organic matter, is found in the topsoil and adds nutrients to the soil. Different components of soil include clay, silt, sand, minerals, and organic matter, and factors such as parent rock, climate, and time impact soil formation.

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delacruz charmine (fs s3 i:30-2:30 sat.)
-defined as a top layer of the earth’s crust -a mixture of mineral grains, organic materials, water, and gas. - Provides support and nutrients for plant growth
 Thin layer of loose, unconsolidated, weathered material that overlies bedrock.  Some earth scientists and engineers use the terms regolith and soil interchangeably  Soil scientists include soil as only the upper layers of regolith.
 breaks down rocks to create soil. It can be caused by weather, water, or living things
 Minerals  Organic matter  Water  Air
Humus is made of leaves, twigs, small animals, or other decayed substances. Humus adds many nutrients to the soil. Humus is in the topsoil.
 Clay holds water well. It is sticky and can be shaped when it is wet. But, it is very hard when dry. Clay is used for adobe or brick houses.
 Silt is very small, broken pieces of rock. It is larger than clay, but smaller than sand. It is powdery when dry.
 -most fertile soil  mixture specially rich in sand and silt with generous amounts of organic matter
 Sand is tiny grains of worn down rock. It doesn’t hold water or have many nutrients.
delacruz charmine (fs s3 i:30-2:30 sat.)
 Parent rock  Climate  Rates of plant growth and decay  Slope aspect and steepness  Time  Transport of soil materials

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delacruz charmine (fs s3 i:30-2:30 sat.)

  • 2. -defined as a top layer of the earth’s crust -a mixture of mineral grains, organic materials, water, and gas. - Provides support and nutrients for plant growth
  • 3.  Thin layer of loose, unconsolidated, weathered material that overlies bedrock.  Some earth scientists and engineers use the terms regolith and soil interchangeably  Soil scientists include soil as only the upper layers of regolith.
  • 4.  breaks down rocks to create soil. It can be caused by weather, water, or living things
  • 5.  Minerals  Organic matter  Water  Air
  • 6. Humus is made of leaves, twigs, small animals, or other decayed substances. Humus adds many nutrients to the soil. Humus is in the topsoil.
  • 7.  Clay holds water well. It is sticky and can be shaped when it is wet. But, it is very hard when dry. Clay is used for adobe or brick houses.
  • 8.  Silt is very small, broken pieces of rock. It is larger than clay, but smaller than sand. It is powdery when dry.
  • 9.  -most fertile soil  mixture specially rich in sand and silt with generous amounts of organic matter
  • 10.  Sand is tiny grains of worn down rock. It doesn’t hold water or have many nutrients.
  • 12.  Parent rock  Climate  Rates of plant growth and decay  Slope aspect and steepness  Time  Transport of soil materials