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Say one use of the obsidian.
Jewelry, hunting weapons etc.
Describe the obsidian.
Shiny black rock with sharp edges.
Say one use of pumice in our everyday lives.
skin care products, teeth-cleaning products etc.
Say two types of igneous rocks.
Pumice, obsidian, granite etc.
How are igneous rocks formed?
When magma cools, it hardens and become a solid rock.
What are the three classifications of rocks?
Igneous, sedimentary and metamorphic.
Name two uses of rocks.
constructions, jewelry, streets, decoration etc.
Define minerals.
inorganic substances
Define rock.
Hard (solid) material that composes the earth's crust.
