My Rock Project

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My Rock Project
All information is courtesy of
http//www.fi.edu/fellows/payton/rocks/expert/inde
x.html, http//volcano.und.nodak.edu/vwdocs/vwless
ons/lessons/Slideshow/Slideindex.html,
http//www.bbc.co.uk/schools/gcsebitesize/chemistr
y/changestoearthandatmosphere/0rocksrev1.shtml,
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Sedimentary

• You should know some examples of sedimentary
  rocks and how they were formed, and understand
  why fossils may be found in them.
• Sedimentary rocks have a layered appearance. They
  may contain fossil remains of animals and plants
  that were trapped as the rocks formed.
• These fossils can be used to date the rock.

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• Igneous rocks are also formed when volcanoes
  erupt, causing the magma to rise above the
  earth's surface.
• When magma appears above the earth, it is called
  lava. Igneous rocks are formed as the lava cools
  above ground.
• Igneous rocks contain randomly-arranged crystals.
  The crystals are large if the molten rock cooled
  slowly, and small if it cooled quickly.

Igneous
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Metamorphic

• Metamorphic rocks usually contain
  regularly-aligned crystals, and they may be shiny
  and hard.
• They sometimes flake into layers.
• Metamorphic rocks are rocks that have "morphed"
  into another kind of rock. These rocks were once
  igneous or sedimentary rocks.

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Rock Cycle!