Rock Types
This rock is made by cooling lava.
Igneous
This rock is used to run trains and heat homes.
Coal
This rock needs heat and pressure to form.
Metamorphic
New Hampshire is the _____ state
Granite
This rock is made at the bottom of lakes rivers and oceans.
Sedimentary
This rock is often used as counter tops in your home.
Marble
This rock is formed deep in the earth.
Metamorphic
This rock was used to make arrow tips.
obsidian
There are over 700 of this type of rock.
Igneous