Unit 12 Classification of Rocks Video Notes
The Rock Cycle
The rock cycle illustrates the ____________ that ____________ and ____________ rocks.
The rock cycle shows the ____________ types of rock and the ____________ that form them.
Three Types of Rock
 ____________
2. ____________
3. ____________
Sedimentary Rocks
Rock formed from ____________ and ____________ particles (Pieces of rocks, shells, plants,
or animals)
Make up _____of rocks on the Earth’s ____________
Come from ____________and ____________ that have been ____________by
____________ or ____________ in ocean water.
Formed in ____________
Usually formed in ____________
Only type of rocks with ____________
They include limestone, sandstone and shale. Limestone is crushed to make gravel for roads
and other uses.
Process that forms Sedimentary Rocks
____________ - Sediments ____________ and ____________ together
____________ - Minerals ____________ in water ____________ sediments together
Sedimentary –____________- is made from the mineral ____________.
Sedimentary: ____________ - is compacted ____________ and ____________.
Sedimentary: ____________ - is made from ____________ ____________ particles.
Metamorphic Rock
Metamorphic rocks have been ____________ by ____________ and ____________ to form
a ____________ type of ____________.
____________, a sedimentary rock, becomes the metamorphic rock marble.
____________ becomes ____________.
____________, an igneous rock, becomes ____________.
Process that forms Metamorphic Rock
1. ____________
2. ____________
3. ______________________
Unit 12 Classification of Rocks Video Notes
Examples of Metamorphic Rock
 Arizona ____________
 Cobalt blue crystal of ____________
 ____________
 ____________ is a white rock that was
originally limestone.
 ____________ comes from
metamorphosed shale.
 ____________ is derived from granite.
Igneous Rocks
Rock formed from the ____________ and ____________ of ____________.
Formed from ____________ (magma)
The ___________________on Earth were igneous rocks.
Process that forms Igneous Rocks
____________
____________ and ____________
Two Types of Igneous Rocks
Intrusive
 IN-trusive…____________
 Formed from ____________ that cooled slowly ____________ the Earth’s surface
 Have ____________ crystals
Extrusive
 EX-trusive… ____________
 Formed from ____________ (lava) that cooled quickly __________________the
Earth’s surface
 Have ____________ crystals
Igneous: ____________ - is made mostly of ________________minerals with _______ crystals.
Igneous: ____________ - is used in cardiac ____________, as well-crafted obsidian blades
have a cutting edge up to ____________sharper than high-quality steel surgical scalpels. It
produces a ____________and less tissue trauma, which translates to faster healing and less
scar tissue.
Igneous: ____________ - is chemically ____________ to ____________ but with
____________ crystals.
Igneous: ____________ - is used for ____________ in cemeteries and also household
____________. In other parts of the country, buildings are made from granite.
Igneous: ____________ - is a ____________rock made from ____________ lava.
Unit 12 Classification of Rocks Video Notes
A process whereby compacted sediments bind and stick
together and turn into rock
A process whereby sediments pack, crush, and settle under the
action of gravity and pressure from overlying layers
Geometric shape of a mineral that reflects its internal
crystalline arrangement of atoms
A measure of scratch resistance of various minerals through
the ability of a harder minerals to scratch a softer minerals for
identification; a set of ten minerals used as a standard of
hardness against which an unknown mineral's hardness is
compared (Known as Moh’s Hardness Scale)
Rock formed when heated magma or lava cools and hardens
A result of molten rock material pushed to Earth's surface by
volcanic action
The way the surface of a mineral reflects light; either metallic
or non-metallic such as silky, dull, glassy, or resinous
Melted rock material beneath Earth's surface
Rock deep within Earth's crust that has been exposed to
extreme heat and pressure causing changes to its appearance,
structure, and composition
A naturally formed, inorganic solid that has a specific chemical
formula and repeating three-dimensional structure
Rock formed when sediments deposited in layers, compact and
cement together under pressure, over long periods of time