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Earth Rocks

Across
The study of the earth including the materials it is made of.
Gravel, Sand, clay, or soil that settles and hardens out of water in riverbeds.
A scientist who studies the earth.
A trace of a plant or animal that has hardened in a rock.
Down
Scraping a mineral on a piece of glass is one of the tests for _______.
Rock that has been through a process much like baking. Sedimentary and igneous rocks change into marble and igneous granite changes into gneiss.
Any rock made by cooling magma or lava.