Video and lesson investigations on the topic of the spider’s web. Key concepts include:
- A spider’s web needs support.
- The framework is made from dry silk.
- The trap (for other insects that it needs for food) is made from sticky silk. Spiders’ webs are designed to withstand a variety of forces.
- The design of a web is ideally suited to its function of catching food.
- Many spiders spin at night, just before dawn.
- They begin eating the previous day’s web and re-cycling the silk for further use. They start weaving a web by anchoring the silk to several key points.
- This provides support for the web.
- It is the cross-weavings of the web that are made from sticky silk.
- If you watch a spider travel around its own web you will notice that it avoids the sticky part.
- The silk of most spiders’ webs is very find yet it is, for its size, one of the strongest materials known