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The
Rock
Cycle
Formation of the Earth
What a rock?
A
rock is a solid material made up of one
or more minerals

Mineral: a solid element or compound
found in the Earth’s crust, that has the same
definite crystal shape and chemical
formula
Igneous Rocks
 Igneous
rocks are formed when magma
or lava cool


Magma: molten rock below Earth’s surface
Lava: molten rock above the Earth’s
surface
Igneous Rocks
 What

do you notice about these rocks?
What is the same about all of them?
 What
are some of the physical properties
of igneous rocks from what you see?
Sedimentary Rocks
 Sedimentary
rocks are formed from
sediments being squished together

Sediments: tiny particles of rocks, minerals,
plants, bones, or shells
Sedimentary Rocks
 What

do you notice about these rocks?
What is the same about all of them?
 What
are some of the physical properties
of sedimentary rocks from what you see?
Metamorphic Rocks
 Metamorphic
rocks are formed from
igneous or sedimentary rock is changed
by pressure or heat
Metamorphic Rocks
 What

do you notice about these rocks?
What is the same about all of them?
 What
are some of the physical properties
of metamorphic rocks from what you
see?
Rock Cycle
Playdoh Activity
 What
did you notice?
 How
does this model what happens to
rocks during the rock cycle?
 What
was similar in different between
each of the “rocks”?