Thames & Kosmos Gecko Run: Marble Run Starter Set handleiding

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Thames & Kosmos

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FISH, OCTOPUSES,

AND BATS

GECKOS, INSECTS,

AND

SPIDERS

Many animals — especially aquatic ones — attach

themselves to surfaces using suction cups. However,

unlike the animals mentioned above, there are no

adhesion forces at work here. Instead, their

suction cups create a vacuum that causes

them to stick to surfaces. You probably

know that octopuses use suction

cups, but did you know that

there are also sharks and

bats with suction cups?

These animals have countless microscopic hairs on their legs

that increase the contact surface with the wall many times

over. This creates physical adhesive forces (referred to

simply as adhesion), which ensure that the wall and the

animal’s feet attract each other. By the way, the same forces

act when you bring plastic wrap (cling wrap) into contact

with a smooth surface.

The remora is a species of ﬁsh

with suction cups on its head.

These allow the ﬁsh to hitch a ride

from larger sea creatures without

moving under its own power.

The tentacles of the giant Paciﬁc octopus are

not only incredibly mobile, they can also hold

onto pretty much anything thanks to their

thousands of suction cups.

The countless hairs on a gecko’s

foot can only be seen clearly under a

microscope.

Animals that STICK

Thanks to the ingenious pads,

your marble run can hang like a gecko

on vertical walls. But do you know which

animals have similar sticky abilities?

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