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The Rock Cycle
What is a rock?
• A rock is a mixture of minerals, rock fragments,
volcanic glass, organic matter, or other natural
materials.
What is the difference between a
rock & a mineral?
• Minerals are solid,
naturally occurring,
inorganic, have a
fixed composition
and are made of
one or more
elements.
• Rocks are made of
one or more
minerals.
Made of
elements
Must be
inorganic
Made only of
compounds
Elements must be
chemically bonded
Naturally
occurring
Solid
Can be made
from organic
materials
Can be made
of lava/
magma
Mixtures
made of
minerals
Have
crystals
Can be
Can be
formed from
solutions
man made
Rock Types
• There are three types of
rocks
Igneous
Sedimentary
Metamorphic
What is the rock cycle?
• ROCK CYCLE: The rock cycle shows the three
types of rock and the processes that form them.
Rock Cycle
explains
how Rocks and Natural Processes
are related
The
Sedimentary
weathering
Metamorphic
Igneous
The law of conservation of matter
• Matter cannot be CREATED OR DESTROYED- only
changed in form.