Explaining the Rock Cycle.
An example of the rock cycle is first its magma and Lava. When a Volcanic activity occurs it turns into a Igneous Rock. Because of Erosion, the Igneous turns into Sediment rock. When Sediment rock is deposition it turns into a Sedimentary Rock. When heat and pressure happens Metamorphic rock is formed. and it repeats for years and years. But, if Erosion occurs on a metamorphic rock, it turns into sediment. If Erosion happens on a sedimentary rock, it turns into a sediment also. But when Melting happens to a sedimentary rock, it turns into magma and lava. The same with Igneous Rock. But with Heat and Pressure happens to an Igneous Rock it turns into a Metamorphic Rock.
Plate tectonics
when plate tectonics push together they can make a volcano, when a volcano erupts and the magma cools it makes igneous rocks, from there you get metamorphic into a sedimentary rock and so on.