Complex sentence: An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler in which the sprinkler head, driven in a circular motion by the force of the outgoing water, pivots on a bearing on top of its threaded attachment nut.
Split into simpler sentences: An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler. The sprinkler head pivots on a bearing on top of its threaded attachment nut.