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The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
The Earth’S Crust #9 Soil
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The Earth’S Crust #9 Soil

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  • 1. The Earth’s Crust Soil
  • 2.
    • Once rocks have been weathered into small enough sediments, soil can begin to form.
  • 3.
    • Soil – a mixture of:
    • weathered rock (sediments)
    • organic matter (living and dead material)
    • minerals
    • water
    • and air.
    Make up a memory sentence with actions and write it down in the blank provided.
  • 4.
    • Rock is turned into sediment and mineral fragments by weathering…
    • … but it is not considered soil until plants and animals live, die, and decay in it.
    • (e.g. leaves, insects, twigs, worms, bacteria, etc)
  • 5.
    • Compost – dead and decaying plant matter.
  • 6.  
  • 7.
    • Compost mixed with rocks and mineral is called humus , which forms the dark coloured part of the soil which is very fertile.
  • 8.
    • Fertile soil – soil that provides nutrients for plant growth.
    • We add fertilizers to soil to make sure it has all of the nutrients for plants to grow.
  • 9.
    • Plants need three nutrients to grow properly:
    • N - nitrogen
    • P - phosphorus
    • K - potassium)
  • 10. Different bags have different amounts of N, P or K depending on what you need. If you put too much of any one of these chemicals in the soil, it could kill your plants.
    • On the side of a fertilizer bag you’ll see three numbers.
    • Example
    • 15 - 5 – 5
    • N P K
    • Each number stands for how much nitrogen, phosphorus, or potassium the fertilizer has in it.
  • 11.
    • Soils can take thousands of years to form. They can range in thickness from 60 meters in some areas to just a few centimeters in others.
    • Soil varies in structure and appearance, depending on its depth. These different layers of soil can be mapped to make a soil profile.
  • 12.
    • Soil profile – a picture of what the layers of soil look like underground.
  • 13.
    • Soil profile
  • 14.
    • Soil profiles will look different from area to area.
    • You can make a soil profile by digging and exposing a vertical edge of the soil or you can drill a core sample using a soil sampler

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