When a pregnant woman's water breaks, what is actually happening is that?

Rupturing of amniotic sac is known as water breaking.

During pregnancy, the child is encompassed and padded by a liquid filled membranous sac called the amniotic sac. Commonly, toward the start of or during labor time, it will burst and this phenomenon happening in pregnant women is called water breaking.  

When the water breaks before initiation of labor pain it is called prelabor crack of films (PROM).  

At the point when the water breaks, the pregnant individual may encounter an impression of wetness in vagina or on perineum, a discontinuous or consistent spilling of modest quantities of watery liquid from vagina, or an increasingly evident spout of clear or light yellow liquid.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.