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The Rock Cycle

Across
Melted rock below the Earth's surface
solid masses of minerals or mineral-like materials
Loose bits of weathered rock
The name of the process when pressure turns sediment into sedimentary rock
The breakdown of rock by physical or chemical processes
Down
A natural glass, like obsidian, except it cooled more slowly and has holes where gas escaped
natural glass, which has no crystalline structure
Type of rock with changed structure and composition due to heat, pressure and fluids.
Type of rock formed when magma cools and crystallizes
Melted rock that reaches the surface