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How do rocks form?
What are minerals?
Why is soil important?
100
This is made of natural, non-living materials made of one or more minerals.
What are rocks?
100
Purple, green, yellow and brown are used to describe this part of a mineral.
What is color?
100
This is a thin layer of loose material that covers most of Earth's land.
What is soil?
200
This is a natural material that forms from non-living matter.
What is a mineral?
200
When you rub a mineral across a rough surface, it may leave this.
What is streak or powder?
200
Living things in soil break down the remains of plants and animals. This process is called...
What is decay?
300
This forms from a very hot mixture of melted minerals and gases. Granite is an example of this type of rock.
What is igneous rocks?
300
This property shows how a mineral reflects light. It might be glassy, metallic, pearly or silky.
What is luster?
300
Decay releases things plants need in order to grow. These things are called...
What is nutrients?
400
This is made over thousands of years, sediments are pressed together and cemented together. Fossils are found in this type of rock.
What is sedimentary rocks?
400
Some minerals such as talc are so soft you can scratch them with your fingernail. By doing this, you are identifying a mineral based on this.
What is hardness?
400
The mixture of sand, silt and clay soil particles creates this kind of new soil...
What is loam?
500
This is a type of rock that has been changed by extreme heat and pressure.
What is metamorphic rocks?
500
This mineral is found in pencils.
What is graphite?
500
This soil has large, rough particles. Water passes through the soil very quickly.
What is sandy soil?