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once kept very still, no water entered

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Cardboard box + egg + river-like environment 

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Cardboard box + egg + river-like environment 

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Aluminium can + egg + river-like environment 

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Aluminium can + egg + river-like environment 

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immediately sank when moved at all.

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Plastic bottle + egg + river-like environment 

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Plastic bottle + egg + river-like environment 

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This environment did not work well with the material. It kept letting water in.

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Cardboard box plus egg after 20 seconds 

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Cardboard box plus egg after 20 seconds 

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sank immediately.

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Yogurt container after 3 minutes in river-like environment 

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Yogurt container after 3 minutes in river-like environment 

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Yogurt container after 3 mins with egg inside 

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Yogurt container after 3 mins with egg inside 

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it let in water immediately when the egg was added. the mass of the egg was too great for this material.

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Yogurt container after 3 minutes in water 

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Yogurt container after 3 minutes in water 

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Like the half-plastic bottle, it floated along the surface.

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Plastic bottle after river-like environment for 3 minutes 

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Plastic bottle after river-like environment for 3 minutes 

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The egg ended up wet and the material also. However, the material remained intact and was not damaged by the river-like environment.

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tilted to one side as soon as the egg was placed inside. Began to fill with water slowly on one side gradually. The more still it was, the less water entered

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Plastic bottle after 3 mins with egg inside 

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Plastic bottle after 3 mins with egg inside 

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Floats well, gliding across the water easily 