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The Rocks, Rock!

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The Rocks, Rock! By: Sophie Sebastiani, Lexi Paul, and Jameria Nelson Sedimentary Rock How sedimentary rocks are formed:; Little pieces of earth are broken down by ... – PowerPoint PPT presentation

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Title: The Rocks, Rock!


1
The Rocks, Rock!
  • By Sophie Sebastiani, Lexi Paul, and Jameria
    Nelson

2
Sedimentary Rock
  • How sedimentary rocks are formed Little pieces
    of earth are broken down by either wind or water.
    These little bits of earth are washed downstream
    where they settle to bottom of lakes, rivers, and
    oceans. Layer after layer of eroded earth is
    deposited on top of each. These layers are
    pressed down more and more through time, until
    the bottom layers slowly turn into rock.
  • Characteristics They contain grains, in layers.
    And also smaller rocks cemented into them.
  • Examples Sandstone, Limestone. Shale, and Gypsum

3
Metamorphic Rocks
  • How is this rock formed?
  • They are under tons and tons of pressure, which
    fosters heat build up, and this causes them to
    change. They do not melt, but the minerals they
    contain change chemically, forming metamorphic
    rocks.
  • Characteristics
  • It is arranged in layers, they are made from
    either a sedimentary rock or a igneous rock. They
    are sometimes unusual such as the striped rock at
    the top.
  • Rocks of this type
  • Marble, Schist, Gneiss, Slate, Quartzite

4
Igneous Rock
  • Igneous Rock
  • How is this rock formed?
  • Igneous rocks are formed either aboveground or
    underground. Underground-They are formed when
    melted rock, called magma deep within the earth
    becomes trapped in pockets. As these pockets
    called magma cools slowly underground, the magma
    becomes Igneous rock. They are also formed when
    volcanoes erupt, causing the magma to rise above
    the earth surface. When magma appears above the
    earth, its called lava. When it cools above
    ground it turns into Igneous Rock
  • Characteristics Usually small, large mineral
    crystals, sometimes used to make concrete, has a
    lot of air space is very light is also called
    Volcanic Glass.
  • Rocks of this type Granite, Scoria, Pumice,
    Obsidian.

5
Conclusions
  • We have come to the conclusion that our rock is
    a Sedimentary Rock called Conglomerate, because
    the features of the sedimentary rock, and surface
    match. Also, we did some research, and all of the
    other types of rocks didnt match our prediction.

6
End of Show!!
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