•  Formed from cooled molten
rock that was once melted
•  Called “fire rocks”
•  Key ingredient is HEAT
•  Look grainy/glossy
•  Granite
•  Form when layers of sediments
settle on top of each other
•  Key ingredient is PRESSURE
•  Light in color
•  Sandstone
•  Rocks that have completely
changed into another rock
•  Key ingredients are
PRESSURE & HEAT
•  Marble and Slate
•  The process in which rocks
are slowly broken down into
smaller pieces over time.
-  Chemical: Chemicals break down
and change minerals in rocks
- Physical: Ice, wind, water
& temperature break down
rocks into smaller bits
•  The process in which bits of
weathered rock are carried
away by wind, water,
gravity, or ice.