Download Rock Cycle Lesson 2017

Warm-up
1.
2.
3.
Which parts in the water cycle require solar radiation?
Which part in the water cycle require water to give off
heat?
Which parts of the water cycle are driven by the force of
gravity?
Objective: I will investigate and explain the
three rock types, their formation, and the
paths they might travel through during the
rock cycle as evidenced by Gizmos Rock
Cycle Activity and Rock Cycle Story.
ROCK CYCLE LESSON
pg. 119
BrainPop Rock Cycle Video
Click here
Three Types of Rock


Rocks are made up of one or more
minerals. Minerals are crystals of
chemical compounds or elements.
The three main kinds of rock are igneous,
sedimentary and metamorphic rock.
Igneous rock – forms when magma/lava
from a volcano cools and hardens.
 Sedimentary rock – forms when sediments
are buried, compacted & cemented
together.
 Metamorphic rock – forms when existing
rock is subjected to great heat & pressure
over a long period of time.

Click here
Once a rock is formed, does it stay the
same rock forever?



NO!
Rocks are continually changed
by many processes, such as
weathering (broken down),
erosion, lithification (solidify),
melting, and cooling.
Rocks can change to and from
the three types.
What is the process by which rocks change?


The Rock Cycle – earth materials change back and
forth among the different types of rocks.
There is no set path that a rock takes to become
another type of rock.
Click here
How are rocks redistributed?

The core, mantle, and crust are one giant rock
recycling machine.
Igneous Rock



“Ignis” means fire
Formed from the cooling of either
magma or lava.
The magma that forms igneous rock
beneath the surface of the earth
can take thousands of years to
cool.
Sedimentary Rocks




Formed from sediments (rock
fragments/pieces) that are
pressed or cemented together.
These sediments are moved by
wind, water, ice or gravity then
deposited into layers.
Sedimentary rocks cover 70%
of the Earth’s surface.
Sedimentary rocks may have
fossils in them.
How do sedimentary layers help us
understand the age of fossils?



As rock pieces are dropped/
deposited, they form
horizontal layers.
The bottom layers are older
because they were
deposited first.
Scientists know that the
layers on top (and the fossils
in the top layer) are
YOUNGER than the fossils in
lower layers (called the law
of superposition).
Metamorphic Rocks


“Meta” means “change” and “morphosis” means
“form” in Greek.
Rocks that have changed due to pressure from
overlaying rock layers and high heat but not
enough to melt the rock.
Where do metamorphic rocks usually form?
1.
2.
3.
Where magma enters /intrudes
relatively cool rock.
Near colliding plates (near mountain
ranges).
Places that are covered miles thick with
other rock causing pressure.
Checking for Understanding

When metamorphic rocks are melted what do they
become?
Checking for Understanding

When magma cools and hardens, what type of rocks are
formed?
Checking for Understanding

When sedimentary rocks are really heated up and
pressure is applied, what do they become?
Checking for Understanding

When igneous rocks are weathered and eroded, what do
they become?
Gizmo Rock Cycle Activity





Open up the document Gizmos Rock Cycle Activity.
You will then log into your Gizmo account and open up
the Gizmo through the Gizmo app or
explorelearning.com.
Complete the Prior Knowledge Questions and Gizmo
Warm-up.
We will start the activity as a class and you will
continue to work through the activity with your partner.
Submit through Canvas when complete.
Rock Cycle Story



Label and color the diagram using the word bank
provided.
On the back, you will create a story about the
movement of a rock through the rock cycle.
The rock may begin anywhere in the cycle and go
through through separate changes by the end of your
story.