This rock forms when melted rock cools and hardens.

Rocks are constantly being formed and destroyed in this process.

Destructive process that moves materials away from a place.

Freezing and melting water, plant roots, and chemicals in rain and snow are causes of this process.

This type of erosion is caused by wind blowing dust, soil or sand from one place to another.

This rock is formed inside Earth from other rocks under pressure and heat.

Igneous rocks under heat and pressure turn into this kind of rock.

These often occur during earthquakes and after heavy rains.

This decaying material contains nutrients that plants need to grow.

This soil offers more food, living space and has the most organic matter.

This type of sedimentary rock is formed from sand.

Metamorphic, sedimentary and igneous rocks melt to become this.

One of the following is not a type of water erosion: glaciers, sand dunes, waves and rivers.

Topsoil, subsoil and bedrock

This type of soil is best for growing plants.

Sandstone and conglomerate are examples of this kind of rock.

The wearing away of igneous, metamorphic and sedimentary rocks turns it into this.

These are placed along the edges of fields to prevent wind erosion of topsoil.

Water, air and pieces of rock and minerals are this kind of material in soil.

This causes sediments to loosen from the soil to be carried away.

This kind of rock is formed when lava is quickly cooled by air at the surface.

This process turns soil into sedimentary rock.

This type of erosion is most common in coastal areas around the Gulf of Mexico.

This material has large particles that water passes through quickly.

The main force behind erosion.