1. The Rock Cycle 3.1

2. NBpg. 32
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The Rock Cycle
How do rocks form and change?
solid mass of mineral or mineral-like matter occurring naturally
Igneous rock is formed by the crystallization of molten magma or lava.
Magma is molten material that forms deep beneath the Earth’s surface.
Lava is magma that reaches the surface
Rocks
Types of rocks

3. NBpg. 32
Slide 2 of 4
The Rock Cycle
formed from the weathered products of preexisting rocks that have been transported, deposited, compacted, and cemented.
Weathering is a process in which rocks are broken down by water, air, and living things.
Sediment is weathered pieces of Earth elements.
the resistance of a mineral to being scratched
Mohs scale consists of 10 minerals arranged from 10 (hardest) to 1 (softest).
Sedimentary rock

4. NBpg. 32
Slide 3 of 4
The Rock Cycle
formed by the changing of pre-existing rock deep within Earth (but still in the solid state) by heat, pressure, and/or chemically active fluids.
Metamorphic rock

5. NBpg. 32
Slide 4 of 4
The Rock Cycle
shows the interrelationships among the three rock types (igneous, sedimentary, and metamorphic). Any major type of rock can change into any other type.
The Rock Cycle