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Rocks and Minerals

Name the 5 characteristics a substance must have to be called a mineral. 1. Solid 2. Naturally occurring 3. Nonliving 4. Definite chemical composition 5. Atoms arranged in a regular repeating pattern
What is luster? The way a mineral shines in reflected light
What is streak? The color of a minerals powder
What is hardness? A minerals resistance to being scratched
Hardness is measured using Moh's scale
Why is color the least useful property in mineral ID? Many minerals are the same color.
What is the difference between cleavage and fracture? Cleavage means breaking on flat planes and fracture means breaking unevenly
How are igneous rocks formed? When melted rock solidifies
What is the difference between lava and magma? Lava is melted rock above ground and magma is melted rock below ground.
How are sedimentary rocks formed? They are formed when particles of other rock or precipitates are compacted and cemented together.
How are metamorphic rocks formed? Existing rock undergoes heat and pressure
What is weathering? When elements break larger rocks into smaller pieces.
What is erosion? When weathered rock is moved to a new location by wind, water, or glaciers.
What is deposition? When eroded rock gets dropped in a new location
The rock cycle states that all rocks come from OTHER ROCKS!!!!!
Using your Rock Cycle Diagram, explain how a igneous rock would become a sedimentary rock. Igneous rock could be weathered and eroded into sediment. The sediment could be compacted and cemented into sedimentary rock.
Using your Rock Cycle diagram, explain now sediments could end up in a metamorphic rock. Sediments could be compacted and cemented into sedimentary rock. Then the sedimentary rock could be placed under extreme heat and pressure to become a metamorphic rock.
Created by: cwalczak