Rock Cycle
Do Now
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1) Move to each
station that is set up
with rocks. Spend two
minutes at each station
and list at least 4
characteristics of the
rocks that you see.
2) Write down the
definition for a mineral.
3) What is the
difference between a
rock and a mineral?
Rock Definitions
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Igneous Rock:
– Magma and Lava cools and hardens to form
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Sedimentary Rock:
– The accumulation of various types of sediments
compacted together
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Metamorphic Rock:
– Heat and pressure cause existing rocks to
change their minerals and/or shape
Intermediate States: Lava & Magama
Magma is still below earth.
Lava is expelled from earth.
Intermediate States: Sediment
Broken rock fragments from the process of Weathering.
Processes (There are 3!)
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1. Melting and Cooling (Hardening)
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2. Heat/pressure (Below Earth)
Processes
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3. Weathering, Eroding, Depositing,
Compaction, Cementation (WEDCC)
– Breaking apart of rocks into sediment fragments,
and then transporting them to another location,
where they settle.
– Compaction: weight of overlying sediments
causes pressure pushing sediments together
– Cementation: minerals dissolved in water are
transported and left behind to cement sediments
together
Do Now!
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Count off by 8 and
get into groups.
Try to arrange the
rock cycle with the
pieces given.
Questions to ponder…
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What does the rock cycle that you
created tell us about the fate of rocks?
How are rocks classified? How does
this different from the classification of
minerals?
Can you figure out which station held
which of the three types of rock?