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The Rock Cycle
What is a rock?
A rock is a naturally formed, consolidated material composed of grains of one or more minerals.
What is a rock?
When you look closely, the sparkles you see are individual crystals of minerals.
What is the difference between a rock & a mineral?
Minerals are solid, naturally occurring, inorganic, have a fixed composition and are made of one or more elements.
Rocks are made of one or more minerals.
Made of elements
Solid
Can be made of
lava/ magma
Have crystals
Can be formed
from solutions
Must be inorganic
Made only of compounds
Elements must be chemically
bonded
Naturally occurring
Can be made from
organic materials
Mixtures made of minerals
Our houses stand on them Our roads are made of them They are a link to the formation of the Earth
We use the minerals in them for everything!
There would be a lot of unemployed geologists without them
Why are rocks important?
In rock, paper, scissors…
In the Rock Cycle, there are 3 types of rocks. What are they?!
A rock is born…
Igneous Rock Kid Rock
Igneous- rock that has solidified from magma
The Rock Cycle
Igneous means “born of fire”
TheEARTH’S elements
Won’t leavethe poor rock alone!
•Ice•wind •Water ice
water
wind
They break up the stone
consolidation of any type of sediment
Sedimentary rock- formed from…
Erosion and compression…
Sedimentary Rock Eroded Kid Rock
What happens next?
Temperature and pressure!
Burial leads to increases in…
Bands (can) form
Metamorphicmeans
“changed”
Metamorphism…The transformation of a rock into a texturally or mineralogically distinct rock, without the rock completely melting
Metamorphism
Metamorphic rock Chris Rock
Rocks
Earth’s internal and external heat engines (continuously)
The rock cycle is driven by…
