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Listed under: Science > Matter > Properties of matter > Density > Buoyancy

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For the Juniors: Balance is a matter of ballast

TLF-IDM019117

Have you seen large ships that carry shipping containers as cargo? In this clip we show you how these ships use ballast to help them balance their load. Find out what ballast is and how it stops a ship from sinking. Also see the massive engines on these big cargo ships.

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Elliot and the Surfing Scientist: Make a lava lamp model using oil and water

TLF-IDM015711

Imagine making your very own lava lamp using materials from your kitchen and bathroom. Watch the Surfing Scientist team show you how it can be done, then try and figure out why it works.