Why is water molecule called polar

Because it has a net dipole moment.

Explanation:

Water

(H2O) is a polar molecule because the electrons of the hydrogen atoms get "pulled" towards the electrons of the oxygen atom. This makes a region of positive charge on the hydrogen atoms and the negative charge on the other end of the molecule, which is the oxygen atom.

Since oxygen has a higher electronegativity than hydrogen, the electrons of the molecule tend to group closer to the oxygen than to the hydrogen atoms. as well as , water is said to be a "polar" molecule, which means that there is an uneven distribution of electron density.

thats what i found sorry if its confusing

for the points

thermophiles, notice the prefix thermo.