Earth's Layers
The center layer of the Earth, made up of a liquid outer core and solid inner core.
Core
Magma that flows from an opening in the Earth's crust onto the surface.
Lava
Small bits of weathered rocks
Sediment
The loose material on the surface of the Earth in which plants grow; formed from bits of weathered rock and other material.
Soil
The very hot, solid, dense sphere made mostly of iron and nickel in the center of the Earth.
Inner core
The hot, melted rock found within the Earth.
Magma
The movement of sediment from one location to another onto the Earth's surface by flowing water, wind, or ice.
Erosion
Describes anything that is or was part of a living thing.
Organic
The thin, outer layer of the Earth that is made of rock; the thin layer along Earth's surface and under the oceans.
Crust
The study of Earthquakes
Seismology
The process that occurs when water or wind drops sediment in a new location.
Deposition
Organic particles in the soil; the part of the soil that consists of decayed plant and animal material.
Humus
The hot, liquid outer portion of the core that is made of nickel and iron.
Outer core
A large piece of the lithosphere that floats on the melted rock in the Earth's mantle.
Plate
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The top layer of soil that contains the most humus; the fertile layer in which plants grow.
Topsoil
The layer of Earth that is made of hot, semisolid rock and is located between the outer core and the crust; makes up most of the Earth's mass and volume.
Mantle
The process that breaks down or changes rocks.
Weathering
This kind of rock is formed by layers of sediment.
Sedimentary
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