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Rocks

an explanation of rock identification and the rock cycle.
by

Mr. Honer

on 5 March 2014

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Transcript of Rocks

Rocks
No Matter where you go
there are Rocks in the
World around you
There are three kinds
of rocks . . .
Igneous
metamorphic
sedimentary
The type of
Rock is determined
by how it is
made . . .
When magma cools down and hardens into rock it creates igneous rock
if it cools above the surface of the earth it is called extrusive
if it cools below the surface of the earth it is called intrusive
rocks are constantly being broken down
by
wind
water
and other forces
This is called
Weathering
weathering breaks rocks into smaller pieces called sediment
sediment doesn't just sit there . . .
it can be moved by
wind
water
and gravity
this is called
Erosion
sediments that are moved by erosion eventually gather together in one place
this is called
Deposition
if enough sediment has been
deposited it can become compacted
and cemented to form . . .
Sedimentary
Rock
Both
sedimentary rock
and
igneous rock
can go through changes too . . .
they can be subducted
toward the mantle:
and experience
heat and pressure
this can form
a metamorphic rock
If any of the rocks get pushed down far enough they could melt back into the material they originally came from . . .
MAGMA!
if the magma manages to cool down again (either above or below the surface)
the cycle starts all over again!
This is called . . .
THE
ROCK
CYCLE!
AND IT NEVER ENDS!!!

EVER!!!
Full transcript