Geology
Rock Types
By: Rich Saferian
Three types of Rock

Igneous Rocks

Sedimentary Rocks

Metamorphic Rock
Igneous Rocks
Igneous rocks are made directly from
cooling magma
 Igneous rocks can be made under the
earths surface or when the magma erupts
from volcanoes can cool on the earths
surface.
 Some examples are

Granite
Scoria
Pumice
Obsidian
Sedimentary Rocks
Sedimentary Rocks are made from eroded
pieces of the earth that come to rest in
bodies of water.
 Over time layer after layer of eroded
earth form together and form a
Sedimentary Rock
 Some Examples are

Sandstone
Limestone
Shale
Gypsum
Metamorphic Rocks




Metamorphic rocks are rocks that have been
“morphed” into another kind of rock
Metamorphic rocks were at one time either
Igneous rocks or Sedimentary rocks.
These rocks are formed by pressure being put
on Igneous or Sedimentary rocks which in
time changes them.
Some examples are
Schist
Gneiss
Web Links

http://sln.fi.edu/fellows/payton/rocks/cre
ate/index.html

http://www.scarborough.k12.me.us/wis/t
eachers/dtewhey/webquest/nature/rocks.
htm
Concept Map
Video

http://www.youtube.com/watch?v=tQUe9
C40NEE

http://www.youtube.com/watch?v=LQtPL
GuRNrI