How are rocks formed on the crust of the Earth?
PROCEDURE: The rock cycle describes the processes by which rocks become other types of rocks by melting. erosion, and changes in temperature, and pressure in or on the Earth. Look at the rocks at the different stations around the room. Describe them on another sheet of paper. Try to place the rocks in the correct positions in the two diagrams below: the rock cycle and the plate tectonic cycle. Use the symbols for each rock type on each diagram.
Rocks on display: pumice (P), sandstone (SS), conglomerate (C), granite (G), marble (M), limestone (L), obsidian (O), basalt (B), gneiss (GN), schist (SC)
PLATE TECTONIC CYCLE
CONCLUSION: How are the plate tectonic and rock cycles related?