Step 1Attach the rubber bands to the 4 ends of the two 40 cm strings. Pass each rubber band through a clothespin 
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Step 2Place a plate with about 10 marbles in the centre of a table.
Place a comic book on top 
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Step 3Place two large books on either side of the comic book with their backs facing the comic book 
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Step 4Slide the strings in the middle of the pages of the books and fix the clips on the 4 corners of the comic book.
Move the books apart until you get a slight tension. 
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Step 5Place a jar lid on the comic book with about 10 marbles inside.Place a second lid on top.
Build two towers of 5 sugar cubes:
- one directly on the comic book
- the other one in the centre of the lid

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Step 6Simulate an earthquake by gently pulling the comic strip book and then releasing it.
Repeat the process, increasing each time the strenghs until one of the towers falls. 
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