Rocks

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Rocks!

• By Sara Morcombe

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Sedimentary Rocks

• Are formed by weathering, erosion, transporting
  and depositing.
• Weathering and erosion means that a rock or a
  mineral is broken down from its original form
  (its appearance is altered).
• Transporting and depositing means that is moved
  from it original place, it travels. An example of
  this is rocks and pebbles running downstream with
  the water current.

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Metamorphic Rocks

• These rocks were once sedimentary and igneous
  rocks.
• They are formed from lots and lots of pressure
  and heat (which is created from pressure).
• Tend to look like they have layers.

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Igneous Rocks

• These rocks are formed above or below the ground.
• Igneous rocks are formed below ground when the
  melted rock (magma) deep within the earth becomes
  trapped, it cools slowly to become a rock.
• Igneous rocks are formed above ground when lava
  (magma that erupts from a volcano) is cooled.

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Test your Knowledge

• A rock that is found by a riverbed and looks like
  it is made up of a mixture of sediments (like
  rocks and pebbles), is what type of rock?
• Igneous
• Metamorphic
• Sedimentary

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Sorry.

• Try again. You can do it!

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Congratulations!

• You are correct! Keep up the good work.

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Pictures From

• Clip Art
• www.daylongraphics.com/.../gallery/rocks.jpg
• www.fi.edu/fellows/fellow1/oct98/index2.html
• www.ivyhall.district96.k12.il.us/4th/KKhp/Rocksand
  Minerals/Gneiss.html