This type of rock is formed when magma cools inside a volcano or outside after an eruption.
What is igneous.
100
A type of soil with almost equal amounts of sand silt and clay.
What is loam
100
The layer of soil closet to the earth's surface.
What is topsoil
200
water, wind and glaciers
What is the agents that cause erosion.
200
Used in building and construction. Plumbers use it for pipes and a little bit in coins like a penny.
What is Copper
200
These type of rocks are regular. They make up 75% of the rocks on earth. They are formed over long periods of time.They are the remains of other rocks.
What is sedimentary
200
The breaking down of animals and plants
What is decay
200
The bottom of topsoil
What is subsoil
300
The two processes that slowly change the surface of the Earth
What is weathering and erosion
300
The softest material
What is talc
300
These rocks are formed when igneous and sedimentary rocks are under extreme heat and pressure.
What is metamorphic.
300
A natural solid made up of one or more minerals.
What is Rock
300
Hard surface material under the soil.
What is bedrock
400
Rust forms when metal gets exposed to water, air, weathering and erosion.