Types of Rocks
A solid substance made of minerals
What is a rock?
The breaking down of rock on Earth's surface into smaller pieces
What is weathering?
layers in the soil
What is horizons?
the bottom horizon that is solid rock
What is bedrock?
Rocks that are formed when melted rock cools and hardens
The process of moving sediment
What is erosion?
the layer of soil that contains the remains of decayed plants and animals
What is humus?
nutrients that are added to soil to make it more fertile
What is fertilizer?
Rocks formed from sediment
What is sedimentary rocks?
What are the main causes of erosion?
water, wind, glaciers
The largest particle of soil
What is sand?
the two types of fertilizer
What is natural and artificial?
A type of rock that has changed from another type of rock.
What is metamorphic rock?
The two types of weathering
What is physical and chemical?
The smallest particle of soil
What is clay?
the name of the top layer of soil
What is topsoil?