Why can't spiders climb up glass?

Question

My mum always catches them in a glass and they can't get out, till she puts them outside. Why is this and can you tell me your source. Thanks y'all.

Answer 1

To "cling", they use little prickly hairs on their legs. These hairs then cling to other materials, giving them the ability to walk up walls and such. They can grasp virtually anything even if it has only the slightest bit of texture. Glass, However, is slippery and has absolutely no texture at all. They cannot cling to something as smooth as this. That is also why they get trapped in the bath tub.

Answer 2

Go look at this picture:

http://www.arachnology.org/Arachnology/Pages/Pictures/bg1.jpg

It shows a spider's foot. Basically two little hooks. The spider needs to insert these hooks into microscopic cracks in the wall, ceiling, or glass to climb. Glass is so smooth that there are not enough little cracks for the spider to insert the hooks.

Hope this helps,
Lorax

Answer 3

The surface of glass is too smooth for a spider get any grip with its legs. That's my guestimation, so I can't list a source. You can try Yahoo search or Wikipedia.

Answer 4

Unlike other critters who who have something akin to a suction cup on there toes, such as geckos and tree frogs, our secrete a sticky substance like mucous as is the case with slugs, snails, and Rosie (The Hut) O'Donnell, spiders utilize hook like projections that cling to rough or imperfect surfaces. Glass is to smooth for these hooks to find purchase.

Answer 5

If that's what you think can you come round to mine and tell the one that's climbing up the glass he's in, that he can't do that

Answer 6

Because they don't have sticky feet like ants and flies. You can't climb up glass for the same reason.

Answer 7

They can climb up glass but with difficulty...their feet are adapted to walk on rough ground.

Answer 8

All they need is a tiny imperfection in the glass to climb up it.

Answer 9

they cannot climb up glass because they think that they will fall throught it becasue it is so shiny i asked a guy i know that works a animal hospital and he is the manager and that is what he said, they cannot click to a surface like this with their legs and they are not able to climb up it.
Hopes this Helps
Good Luck

Answer 10

She replaced into insane. undergo in innovations that saying bearing directly to the definition of madness----doing the comparable factor, yet staring at for a various result. mutually as is she going to seize on that the rain will come and wash her away. Dumb spiders!!