What happens when water comes in contact with iron

When heat­ed, iron re­acts with wa­ter to form its main ox­ide. Com­bin­ing 3 moles of iron and 4 moles of wa­ter will re­sult in iron ox­ides with a non-sto­i­chio­met­ric com­po­si­tion of FeₓOᵧ – mixed iron(II,III) ox­ide Fe₃O₄ and gaseous hy­dro­gen.

Explanation:

Deep ocean currents (also known as Thermohaline Circulation) are caused by: ... The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity. The earth's rotation also influences deep ocean currents.

Explanation: