The Rock Cycle

  A mineral is a solid in Earth´s crust with a definite structure and composition. There are 3 types of rocks: igneous,sedimentary and metamrphic rock. The igneous rock is a rock that forms when hot,cools and hardens into a solid. The sedimentary rock is a rock that form from pieces of other rocks and the metamorphic rock is a rock that forms from another kind of rock that is changed by heat or pressure.
 Igneous Rock
     
        Sedimentary Rock     


  Metamorphic Rock

The  Rock Cycle is a never-ending cycle and it has no beggining or end.