Rock Cycles

Rocks are constantly on the move. Eroded by water, sinking into the sea, and ejected by volcanoes, rocks have their very own cycle of existence. Earth Science - Geology - Learning Points. The rock cycle is the process of rocks weathering away and creating new rocks. Over time weathering reduces rock to tiny grains of sand. The wind transports the sand, which builds up on seabeds and eventually becomes sedimentary rocks. Deep in the Earth, high pressure and temperature melt rocks into magma which is produced during volcanic eruptions. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.