(1) Hi there! We are part of the Rock Cycle Society, and we will be teaching you the rock cycle!
(3) Oh jeez, look! It's erupting! We better pass it on over to the other instructors!
(2) We are starting with this volcano, as it erupts the magma slides down the hill and cools.
Igneous Rock & Weathering
(1) Well hello. I'll just pick off where Emma and Rosie left off. After magma cools, it creates a rock called igneous rock. One cool feature of this rock, is that it can sometimes have holes in it from pockets of air that formed while it cooled!
(2) Yup! We are here at our base in the mountains watching the next step of the rock cycle, which consists of weathering and erosion!
Weathering, Sediment & Sedimentary Rock
(1) Exactly! So when weathering breaks down rocks, it turns into a sediment. This sediment goes through a process called-
(3) Sedimentary rock! It's called sedimentary rock! Which I would have said if someone hadn't interrupted me!
(2) Compacting and cementation. This smashes all the sediment together and after years and years of pushing, it becomes a new rock called-
Consistency Along With Heat & Pressure
(1) Remember, this has always been happening everywhere in the world! But, back to the process... Often, underground the process of heat and pressure takes place.
(2) Yes, just like Ellie here said, heat and pressure often happens underground. It is basically when rocks get so hot while next to magma, then right after the intense heat is applied, other objects press against the affected area to create a new rock. As the name implies, this process consists of heat and pressure.
Metamorphosis & Metamorphic Rocks
(1) Right! So this new rock formed after the heat and pressure process is called a metamorphic rock. The word metamorphic comes from the word metamorphosis.
(2) Metamorphosis means change. Meaning that if this new rock is called a metamorphic rock, it is implying that it changed.
Melting & Magma
(2) The rock cycle we demonstrated started with the volcanic eruption, but it can go in any order. Remember, this takes many and many years. Now, we are going to share with you the differences between these awesome rocks!
(1) This final step in the rock cycle ends up back where it all started. Magma. See, after all the changing, there is one last process that transitions the rocks back into the hot liquid. This is simply melting. When rocks get too hot, it just melts right there. Remember, since this is a cycle, it has always happened and always will. So there you have it. The rock cycle!