Soil Formation
This process breaks rocks into smaller pieces that eventually help form soil.
weathering
These rocks form when melted rock cools and hardens.
igneous rocks
Soil is made of four main components: minerals, air, water, and this.
Organic Matter
What are the two types of weathering?
mechanical (physical) weathering and chemical weathering
These rocks form when layers of sediment are pressed and cemented together.
sedimentary rocks
The mineral pieces in soil come from this material breaking down.
rocks
This process moves weathered rock and soil from one place to another by wind, water, ice, or gravity.
These rocks form when heat and pressure change existing rock.
metamorphic rocks
This part of soil comes from decomposed plants and animals.
Organic Matter/ Humus
Dead plants and animals that break down and add nutrients to soil form this material.
Humus
What rocks would likely be found at a subduction zone?
Metamorphic and/ or igneous
What are the three types of sediment in order of largest to smallest?
Sand, Silt, and Clay
These simple plants are usually the first to live in soil.
Moss and/or Lichen
This process turns any type of rock into magma, starting the rock cycle again.
melting
This type of soil particle is the smallest and holds water the best.
Clay