Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ Do: Cracked the shell of a hard-boiled egg and cut it in half.

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Presentation transcript:

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ 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 Tectonics9/21/2015

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ Egg Shell Thickness: 1/3 mm Diameter (length): 7 cm (70mm) Radius (1/2 diameter): 3.5 cm (35 mm) ~ 100 SHELL IS 1/100 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 TWICE as thin as an egg shell! ÷÷

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ 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 Read p. ¶ together

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ 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).

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ Do: Put KMnO 4 granules into water being heated. 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.

Hands-on, effective science lessons. TM Copyright © 2007 by Interactive Science Teacher™ 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 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 Seal baggie shut Rinse hands