By: Katie Kartchner
The rock cycle is an Idolized cycle of processes
undergone by rocks in the Earth’s crust.
There are three types of rock…
◦ Igneous
◦ Sedimentary
◦ Metamorphic
1.
First, our journey begins in the mantle. Here
we see some red hot magma that is being
pushed up towards the crust. Some of this
magma creeps into the cracks of the
volcano; while, the rest is forced out of the
top of the volcano. Once the magma is out
of the volcano, it is called lava. The lava
cools and forms igneous rocks.
2. Then some of the igneous rocks roll down
the mountains formed by the volcanoes and
eventually end up in the ocean. As they roll,
bits and pieces of the igneous rocks are broken
and form sediments. Layer after layer of
sediments are pressed and cemented together
forming sedimentary rocks.

Some of the sedimentary rocks on the very
bottom get hot because of the pressure and
change to metamorphic rock. When the
metamorphic rock is buried deeper, it gets
hotter and melts. Once again, it becomes
magma and may eventually be pushed up and
out of a volcano.

You will use these links to guide you while
finding all the answers to these questions on
the next slide.
◦ http://www.brainpop.com/science/theearthsystem/
rockcycle/preview.weml
◦ http://www.rocksforkids.com/RFK/howrocks.html#
Cycle
1)
2)
3)
What are the three main kinds of rocks?
Name some example of these three kind of
rocks.
What are rocks made of?
Why are rocks so different?
Igneous is a rock formed by the solidification of
molten magma.


Igneous rock can change into sedimentary rock or
into metamorphic rock. Igneous rock can form
underground, where the magma cools slowly. Or,
igneous rock can form above ground, where the
magma cools quickly.
Example:
◦ Granite
◦ Gabbro
◦ Basalt
You are an igneous rock, you will type a
story about the rock cycle while being an
igneous rock. Click on the picture to go
to a site that explains the rock cycle.
Sedimentary is a rock formed from
consolidated clay sediments.

Seventy percent of all the rocks on earth
are sedimentary rocks. The earth’s surface is
constantly eroded. This means that rocks are
broken up into smaller pieces by weathering
agents such as wind, water, and ice.
 Examples:
◦
◦
◦
Sandstone
Limestone
Shale

Answer the questions on the next slide.
1)
2)
3)
What is a sedimentary rock?
How do they differ from other rocks?
How can different sedimentary rocks differ
in appearance
A metamorphic rock is altered by pressure and heat.



Metamorphic rock can change into igneous or
sedimentary rock.
Animation
Examples:
◦ Gneiss
◦ Marble
◦ Slate
Describe the procedure you would suggest for
identifying common sedimentary rocks.


http://www.kn.att.com/wired/fil/pages/webr
ocksal.html
http://www.rocksforkids.com/RFK/howrocks.
html