Copyright © 2012 InteractiveScienceLessons.com Do: Cracked the shell of a hard-boiled egg and cut it in half. See: Some shell pieces were big, some small.

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Copyright © 2012 InteractiveScienceLessons.com Do: Cracked the shell of a hard-boiled egg and cut it in half. See: Some shell pieces were big, some small. It had 2 thick inner layers and 1 thin outer layer. What’s Happening: Earth also has 3 main layers- the core, mantle, and crust. The crust is very thin and broken into many plates of varying size, each slowly drifting its own way. Read p. ¶ together Interactive Notes: Plate Tectonics

Copyright © 2012 InteractiveScienceLessons.com Egg Shell Thickness: ~1/2 mm Diameter (length): 4 cm (40mm) Radius (1/2 diameter): 2.0 cm (20 mm) ~ 40 SHELL IS 1/40 TH THE THICKNESS OF THE EGG Earth ~20 miles 8,000 miles 4,000 miles 200 CRUST IS 1/200 TH THE THICKNESS OF THE EARTH Earth’s crust is 5x as thin as an egg shell! ÷÷

Copyright © 2012 InteractiveScienceLessons.com Do: Heated water with coloring. See: Water continuously rose on the hot side and sank on the cooler side. What’s Happening: A convection current is a cycle of heating and rising then cooling and sinking. Earth’s core heats magma in the mantle. Earth’s plates, floating on top, then move.

Copyright © 2012 InteractiveScienceLessons.com

Copyright © 2012 InteractiveScienceLessons.com Do: Drew a super continent with plate boundaries and a black line from top to bottom. Cut the pieces apart. See: The pieces separated, but the black line shows how they used to fit. What’s Happening: Coal deposits from different continents line up, suggesting there once was a super continent called Pangaea. There’s also the puzzle-like fit, fossils, climate, and other rock clues. Alfred Wegener first proposed this in 1912.

Copyright © 2012 InteractiveScienceLessons.com Do: Put the continent pieces in water. See: The convection current caused them to move in different directions. What’s Happening: We know today that the continents are drifting. Where two plates meet they may pull apart, slide past each other, or press against one another, causing folding (mountain ranges).

Copyright © 2012 InteractiveScienceLessons.com Clean Up Person 1 Throw away egg and shell pieces Put new egg in box Keep paper plate in box Person 2 Throw away continent pieces Put new index card square in box Person 3 Count 4 new note sheets Do final inventory Person 4 Empty and rinse the large beaker Fill it 2/3 full with water

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