What is the name of the stretch effect in iPhone when scrolling?

Question

iPhone

For example, in the browser or in the application I scroll to the end, then we get such an effect of stretching the content.

I would be glad if you tell me a video with the name of the effect or animation. I want to write an application and add such an effect when scrolling.

There is no such “natural” feature in android, because everything is clumsy somehow and abruptly, unpleasantly.