Weathering & Erosion
The breaking down of rocks
weathering
An opening in the Earth's surface
A Volcano
Where two plates meet
A plate boundary
A mixture of rock, minerals, organic matter, water, and air
Soil
When weathered pieces get moved to a different location
Erosion
Molten rock that is underground
Magma
The top layer of Earth
Earth's crust
The most important layer of soil
Humus
Decomposition
Molten rock that is above ground
Lava
The shifting of Earth's plates
Plate Tectonics
Layer of Solid Rock
Bedrock
Organisms that break down dead materials
Decomposers
The first layer of Earth's crust
mantle
What type of change happens when plates slide past each other?
An earthquake
Subsoil
Organic Matter is...
Dead plants and/or animals
The Ash Cloud
When plates move apart this forms
A valley or a trench
Topsoil