Rocks
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How metamorphic rocks are formed
Metamorphic rocks form when the minerals in an existing rock are changed by heat and/or pressure within the Earth
Type of metamorphic rock
Any type of rock – igneous, sedimentary, or metamorphic - can become a metamorphic rock.
How Sedimentary rocks formed
Sedimentary rocks form by the compaction and cementing together of sediments
Intrusive rocks
Igneous rocks are called intrusive when they cool and solidify beneath the surface.
Ignorous rocks are formed by
Igneous rocks form from cooling magma
4 ways you can identify a mineral
• hardness (mineral’s ability to scratch or be scratched by another mineral) -density (how much matter in a certain amount of space) -luster (sparkly or dull) • streak, which is the color of the mineral’s powder that is left behind when the mineral is scratched across an unglazed porcelain surface.
How many minerals are on earth that scientist have found
4,000
What is a Crystalline Solid
A crystal is a solid in which the atoms are arranged in a regular, repeating pattern.
Coal a mineral or no
No
What are rocks
A rock is a naturally formed, non-living earth material. Rocks are made of collections of mineral grains that are held together in a firm, solid mass.