嗨 大家好 我们刚刚碰见个蜘蛛网
Hi, guys. We just came across the spider web.
Look, how pretty it is!
You might note kids or a dog that’s kind of nervous or even afraid around spiders.
In fact, one of four-year-old viewers is kind of afraid of spiders, too.
But she knew exactly what to do.
She wrote and said:
” I want to learn about scary spiders so that I am not afraid of them anymore”
That’s a great attitude.
Knowledge is power.
So let’s all see what we can discover about spiders.
One thing that you should know is that spider have really important job to do.
很多小昆虫像 蚊子啦 虱子啦 家蝇啦
The lots of small little insects like mosquitos, gnats and house flies.
So spiders wander around to do their jobs , then there will be a lot more of these pesky insects around.
Speak of insects, some people think that spiders are a kind of insect
but not true.
You might remember how you can tell insect from other kind of animals.
Insect have six legs and 3 main body parts,
a head, a thorax, and an abdomen.
Plus they sometimes have other body part, too.
Like wings, helping flying around,
and antennae sounds the surrounding.
Now spiders are different in a lot of the ways.
For one thing is they only have two body parts.
They have the abdomen.
But instead of having a head and a thorax.
They have just one other body part.
With to put together, called cephalothorax.
And maybe the easiest way to spot a spider is that they always have eight legs
and they don’t have wings or antennae.
Here’s another fun fact about spiders.
Spiders have different kind of eyes. The insects too.
Insect have really complicated eyes called compound eyes.
They made of thousands of little lenses that work together so the insect can see.
But spider have simple eyes was just one lens.
Just like you and I do.
So you actually have something in common with spiders.
But if you ever see a picture of spider up close,
you might know that the spider have more than two eyes,
most of them have eight eyes.
One kind of eight eyes spider is called jumping spider.
This spider have some be best vision of any spider in the world.
Their eight eyes make them able to see almost the whole way around their body.
But jumping spider do something else very well too.
And then you can guess what it is.
Some of these spider can jump up to 50 times the length of their own bodies.
You can do that?
You will be able to jump over 12 cars in the single leap.
But this spiders are careful jumpers.
They always stick a piece of silk called a dragline to whatever jumping from.
So they happen to miss what jumping for.
They won’t fall.
Jumping spiders are quite smart and really kind of cute.
But they don’t do something that lots of other spiders do.
They don’t spin fancy web.
For the most beautiful web around, you should keep an eye out for spiders,
no, as orb web.
So word orb means round.
Another shape we see in a orb web a nice pretty circle.
The silks all weavers and other spider use to make the web come from a special body part called spinnerets.
Each kind is for a different job.
Some the threader or weavers use is sticky.
So when insects fly into its web.
It’s get caught in this thread.
But all weavers also make itself that easy sticky.
When they walk around on their own web,
they keep their eight feet on the special threads.
Then the spider can get to its prey and wrap it up in another kind of silk
and tell it ready to eat it.
Now you know more about them.
We hope you feel better about our friend the spider.
So next time you see a spider,
take a few time to watch.
You can learn more about it.
You can also learn more by reading book and of course asking question.
Thank you for joining me on Scishow Kids.
You are always welcomed to ask us about anything that’s on your mind.
Just gain your parents’ help and leave comment below
or e-mail us at firstname.lastname@example.org.
And we’ll see you next time.