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Changing Rocks
Heat inside the Earth heats rocks. The rocks become magma. Magma
moves up to the surface of the Earth. It cools and becomes igneous rock.
Rocks deep inside the Earth change into another type of rock. Heat and
pressure inside the Earth make the rocks change. These types of rocks are
called metamorphic rock. Diamonds are metamorphic rocks.
Sedimentary rock is formed when rocks on the surface of the Earth are
broken up into tiny bits-sediments. The sediments get into oceans and lakes.
They form into layers on the bottom of the oceans and lakes and harden into
rock.
1. Rock can be changed by the ______________ inside the Earth.
2. _________ is formed when rocks heat up and move to the surface of the
Earth.
3. Rock that is formed when magma moves to the surface and is cooled is
called____________________________________.
4. Rock formed from heat and pressure is called _____________________
______________________________________.
5. Diamonds are a type of _____________________________ rock.
6. Some rocks are broken into tiny bits or__________________________.
7. Layers of sediments in the oceans or lakes are called________________
_______________________________________.