Layers of the Earth
This is the thinnest and least dense layer of the Earth.
crust
Minerals usually have this type of shape.
geometric shape or crystal shape
Rocks are made of one or more of these.
minerals
This cycle describes how rocks change from one type to another.
rock cycle
Granite and marble are often used as these materials.
building materials
This layer is between the crust and the core.
mantle
This property measures how resistant a mineral is to scratching.
Hardness
Rocks are classified according to their composition and this.
texture
Cooling magma forms this type of rock.
igneous rocks
Coal is used as a source of this.
energy
The deepest layer of the Earth.
the core
Quartz can scratch orthoclase because quartz is this.
harder
Igneous rocks form when this cools and solidifies.
magma
Weathering and erosion create these small rock particles.
sediments
Minerals such as quartz are used in this type of technology.
electronics or technology
The continental crust can be between this many kilometers thick.
10–70 km
This scale is used to measure the hardness of minerals.
Mohs scale
Sedimentary rocks are formed by the accumulation of these materials.
sediments
Sediments become sedimentary rock through compaction and this process.
cementation
Places where rocks are extracted are called these.
quarries
This type of rock is commonly found in the oceanic crust.
basalt
A mineral that is attracted to a magnet has this property.
Magnetism
Heat and pressure transform rocks into this type of rock.
metamorphic rocks
Metamorphic rocks can melt and become this substance again.
magma
Extracting rocks and minerals can negatively affect this.
environment