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goal:

You will be able to demonstrate and explain the steps of the rock cycle.

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#6 on our standards sheet

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igneous rock

  • Forms when magma or lava cool.
    • Magma- underground
    • Lava- above ground

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Sedimentary rock

  • Pieces of rock, sand, silt, mud, dirt, shells, and other materials are deposited into layers and pressed over time.

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metamorphic rock

  • Formed (mostly) in Earth’s mantle due to intense heat and pressure.

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rock cycle

  • Rocks are always changing from one type to another.
  • Energy that drives this process comes from heat within the Earth & the sun that drives weathering & erosion

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starburst lab simulation

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#1.

Unwrap your 3 Starbursts and place on the wax paper.

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#2.

With a pencil on the wax paper, label the candies: shells, dirt, and sand.

shells

dirt

sand

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Weathering and Erosion:

  • Weathering is when materials are broken into small pieces called sediments.
  • Erosion is when the sediments are carried by wind or water to a new location.

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#3.

Use the scissors to cut the starbursts into small sediments.

shells

dirt

sand

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compaction & cementation:

  • Compaction presses the sediments together.
  • Cementation is where minerals form crystals that bond the sediments together.

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#4.

what kind of rock is this?

Mix the sediments up and use compaction to press them into 1 piece.

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#5.

Warm the sedimentary rock in your hands for awhile.

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#6.

Place the warm sedimentary rock back on the wax paper. Fold the wax paper over the rock and press down.

BOOK

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#7.

what kind of rock is this?

Fold the rock again, and press down again.

BOOK

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#8.

what is made?

Put your metamorphic rock on aluminum foil and heat over the candle. Make a little “boat” to hold the rock.

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#9.

what kind of rock is made?

Place your aluminum foil on your desk and watch your lava cool.

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how would you turn this into sedimentary rock?

metamorphic rock?

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clean up &

Complete the rest of your lab.

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Great job!