L.O: By the end of this lesson I will be able to explain the cyclical processes within rock cycle. ESRT Page-6
ESRT pg 6
Do now: in “Upco”, read pages 67- 68.
- Shows how rocks change from one type to another because of the interactions with water, air, and land.
The Rock Cycle
Earth’s rocks are constantly changing from one form to another. They are constantly:
THE ROCK CYCLE SHOWS 3 THINGS
MADE FROM OTHER ROCKS.
ON THE BASIS OF THEIR ORIGIN
OF WAYS A ROCK CAN
CHANGE, IT JUST DEPENDS
ON THE ROCKS ENVIRONMENT.
Important Vocabulary
Weathering – is a process in which rocks are physically and chemically broken down by water, air, and living things.
Erosion - transportation of material.
Deposition - When an agent of erosion (water, wind, ice, or gravity) lose energy and sediments drop back to the ground
Important Vocabulary
Magma – is molten material that forms deep beneath the Earth’s surface.
Lava – Magma that reaches the surface.
Internal Energy
Processes driven by heat from Earth’s interior are responsible for forming both igneous and metamorphic rocks.
Energy for the rock cycle comes from
External Energy
Weathering and the movement of weathered materials are external processes powered by energy from the sun & produce sedimentary rocks.
On the earth science regents:�
You will have to identify the class of three rocks.
(is it igneous, sedimentary or metamorphic) and describe its properties.
Let’s Review
Sedimentary Rocks
Metamorphic Rocks
Things to look for to help you identify an igneous rock
If it has vesicles (gas pockets),
It is igneous!
Vesicles = an igneous rock
A Vesicular rock on Mars, so Mars Has volcanoes!
If it has a black glassy texture,
Its an IGNEOUS ROCK!
IF IT HAS OBVIOUS INTERGROWN CRYSTALS
(LIKE THIS GRANITE), ITS IGNEOUS!
OBVIOUSLY LARGE CRYSTALS = IGNEOUS
LARGE CRYSTALS = IGNEOUS
OBVIOUS STRATIFICATION (LAYERS) =
SEDIMENTARY ROCK (SANDSTONE)
If it looks like pieces cemented together, its
A sedimentary rock.
If you see fossils, shells, or the remains of
once living things, its sedimentary!
If you see foliation (mineral alignment, its metamorphic
If you see banding,(thick mineral alignment), its metamorphic
If the rock looks distorted, its metamorphic
Exit Reflection
Under what conditions can one rock change into another?
Independent Work