Bell Work: 10/20/14 Write the answer and explain why the answer you chose is correct (justify your answer). Have your notebook open to your Paper Plate Rock Cycle. Work on Section Review pg. 367.

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Bell Work 10/20/14Write the answer and explain
why the answer you chose is correct (justify your
answer). Have your notebook open to your Paper
Plate Rock Cycle. Work on Section Review pg. 367.
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(No Transcript)
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Real-life application!
Look at the strata in the sandstone!
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Objectives

• 24. Metamorphic Rock Notes
• Identify the major processes that drive the rock
  cycle (SPI 0707.7.3).
• How are metamorphic rocks formed?
• How are the composition, heat, and pressure
  related to the texture of metamorphic rock?
• What is the difference between foliated and
  nonfoliated metamorphic rocks?
• Label a diagram that depicts the three different
  rock types (SPI 0707.7.2).

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Metamorphic Starbursts

• Group Discussion
• Rip your Starburst in half and share it with
  someone in your group who has a different color
  Starburst.
• Stick the two pieces together and wrap them back
  up in your Starburst wrapper.
• Explain to your elbow partner how the individual
  pieces of starbursts stuck together are like
  sedimentary rock.
• What does the word metamorphosis mean?
• We will look at more questions towards the end of
  class

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Metamorphic Rocks Rocks that Change

• Metamorphic comes from the Greek words meta and
  morph. Meta means change and morph means
  form. So we get metamorphic meaning to change
  form.

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Metamorphic Rock Origins of Metamorphic Rock

• Rocks can also go through a process called
  metamorphism, which means to ____________.
• ___________ _______ are rocks in which the
  structure, texture, or composition of the rocks
  have changed.
• All three types of rocks can go through
  metamorphism or can be changed by ______,
  _________, or a combination of both.

change form
Metamorphic
rocks
heat
pressure
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Metamorphic Rock Two Kinds of Metamorphism
Contact
metamorphism

• ___________ ________________occurs when magma
  intrudes or forces its way into existing rock.
  The heat of the magma bakes the surrounding rocks
  causing them to change.
• ___________ ________________ by contrast takes
  place over large areas deep within Earths crust.
  Regional metamorphism is associated with mountain
  building.

metamorphism
Regional
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Metamorphic Rock Textures of Metamorphic Rocks

• Textures of metamorphic rocks
• depend on composition of the
• rock and the amount of heat and pressure that is
  applied to the rock.
• __________ mineral grains arranged in bands or
  planes (straight lines). Look at pg. 379.
• ____________ mineral grains are not arranged in
  bands or planes
• Examples of metamorphic rocks

Foliated
Nonfoliated
Gneiss
Marble
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Rock Classification

• In the T-chart on your notes, lets categorize the
  rock samples as Foliated Metamorphic Rocks or
  Nonfoliated Metamorphic Rocks.
• Pay careful attention to how the mineral grains
  are arranged in the rocks (bands or not).
• Write the names of the rocks on the T-chart under
  the categories.

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Question Challenge

• How could 14, Amphibolite, be categorized both
  foliated and nonfoliated?

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Real World Uses of Metamorphic Rocks
Marble
Slate
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Metamorphic Starbursts

• Group Discussion
• Describe to your elbow partner how starburst
  metamorphoses when heat and pressure are applied
  to them.
• How is this starburst activity related to
  metamorphic rock?

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3-2-1 Reflection

• 3 things I learned
• 2 questions I have
• 1 way I can relate this lesson to my daily life