Why does quran says mountains were cast from above(من فوقھا) in 41:10?

Need an answer to this argument made by an atheist site: First Scientific Mistake of Quran: Allah 'placed'/'cast' mountains over earth's surface (Quran 41:10) وجعل فيها رواسي من فوقها (Quran Word by Word Translation by Quran Corpus) And He placed in it stabilisers (i.e. mountains) from above (من فوقها). (Word for Word Dr. Shehnaz Shaikh) And He placed therein firmly-set mountains from above it. So according to quran mountains were cast into the earth from uphill trajectory. According to the modern science, mountains are not 'placed'/'cast' over earth's surface, but they are formed when two plates tectonics collide with each other (i.e. when earthquake takes place), then crust of one plate goes upwards and forms a mountain, while the crust of other plate goes downwards.