Tuesday, June 8, 2010

Rock Story

The earth is made up of an outer crust, the mantle and an outer and inner core. The earth is like an apple. Its outer crust is like an apples skin and the inner core is like that of an apples.

Plate tectonics describe how the earth’s surface pieces fit together like huge puzzle pieces. The forces beneath the earths surface cause the plates to shift and move. This causes volcanoes and earthquakes to occur. When plates collide or rub together volcanoes and earthquakes appear at the boundaries. This is called ‘The ring of fire’.


Mountains are formed when pressure on the earths crust forces it to rise. It pushes large blocks of rocks upwards. They also form when two plates collide and one moves up over the other.

There are three types of rocks sedimentary rock, ingenious rock and metamorphic rock.

The landforms that are on our earth are amazing and move and change constantly.


By Shanice Davis

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