1
They are formed when heat or pressure changes the original rocks.
2
It\'s a rock formed from pieces of other rocks or pieces of living things.
3
Rocks are made up of...
4
It\'s a igneous rock.
5
It\'s the Earth\'s middle layer. It\'s extremely hot.
6
It\'s the Earth\'s outer layer. It is made up of solid materials.
7
We can identify each mineral by its density, colour, hardness and...
8
They are natural materials which made up the Earth\'s crust.
9
It\'s a metamorphic rock.
10
It\'s the Earth\'s inner layer. It is also extremely hot. It is divided into two parts.
