The Rock Cycle A LAB

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

Crayon Rock Lab You have be given a sample of crayon rock. List some characteristics about the rock:

Igneous Rock formed by cooling and hardening of hot liquid rock Characteristics Solid No fossils No bands

I I Igneous Rock

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

Weathering and Erosion Igneous Rock Weathering and Erosion Sediments

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:

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

Compaction and Cementation Weathering and Erosion Sediments Compaction and Cementation Weathering and Erosion Sedimentary Rock

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

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

Weathering and Erosion Igneous Rock Heat and Pressure Heat and Pressure Metamorphic Rock Sediments Weathering and Erosion

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?

Igneous Rock Melting Magma Melting Metamorphic Rock

Crayon Rock Lab Allow the wax to cool What rock type has your crayon rock returned to? Igneous

Weathering and Erosion Cooling Igneous Rock Melting Weathering and Erosion Heat and Pressure Magma Sediments Metamorphic Rock

Compaction and Cementation Weathering and Erosion Metamorphic Rock Sediments Compaction and Cementation Weathering and Erosion Heat and Pressure Sedimentary Rock

Weathering and Erosion Igneous Rock Magma Heat and Pressure Melting Weathering and Erosion Metamorphic Rock Sediments

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