a lab. crayon rock lab each student needs to collect the following from the front of the class:...
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The Rock CycleA LAB
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Crayon Rock Lab
Each student needs to collect the following from the front of the class:
• Crayon• Piece of foil• Plastic utensil• Rock Cycle handout
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Crayon Rock Lab
You have be given a sample of crayon rock. List some characteristics about the rock:
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Igneous Rock
• formed by cooling and hardening of hot liquid rock
• Characteristics– Solid– No fossils– No bands
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II
Igneous Rock
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Crayon Rock Lab
• Unwrap your crayon and start to create a pile of crayon shavings on your aluminum foil.
• You can trade crayons if you would like to have different colours
• You will need a decent size pile, so give yourself at least 5 minutes to do this
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I
Igneous Rock
Weathering and Erosion
Sediments
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Crayon Rock Lab
• Now fold over the foil and press down on the pile as hard as you can
• Unwrap the foil very carefully• Describe what this looks like:
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Sedimentary Rock
• formed when sediments are pressed and cemented together
• Characteristics– Visible layers- curved or flat – Has pores and holes– Has fossils–Makes up 70 % of the rock on the earth
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Sedimentary Rock
Sediments
Weathering and Erosion
Compaction and
Cementation
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Crayon Rock Lab
• Bring your shavings to Mrs. Ashton and let the rock melt until it is soft to touch and the colours swirl but do not mix together
• now let the rock cool• Describe what your rock looks like
now
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Metamorphic Rock
• formed when rocks are changed by heat and pressure
• Characteristics– Rarely has fossils– Alternating bands of light and dark rock– Rarely has pores or holes
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Metamorphic Rock
Igneous Rock
Sediments
Heat and Pressure
Weathering and Erosion
Heat and Pressure
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Crayon Rock Lab
• Come back to the front and heat your rock again until the wax has melted into a smooth pool of liquid wax and all the colours have blended together
• What has it turned into?
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I
Igneous Rock
Metamorphic Rock
Magma
Melting
Melting
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Crayon Rock Lab
• Allow the wax to cool
What rock type has your crayon rock returned to?
Igneous
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I
Igneous Rock
Weathering and Erosion
Heat and Pressure
Melting
Metamorphic Rock
Magma
Sediments
Cooling
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Sedimentary Rock
Metamorphic Rock
Sediments
Weathering and Erosion
Compaction and
Cementation
Heat and Pressure
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Metamorphic Rock
Igneous Rock
Sediments
Magma
Heat and Pressure
Weathering and Erosion
Melting
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Definitions
• Igneous Rock- formed by cooling and hardening of hot liquid rock
• Sedimentary Rock- formed when sediments are pressed and cemented together
• Metamorphic Rock- formed when rocks are changed by heat and pressure