Question

WHEN MOON BECOMES HALF . ITS BECOMES STRAIGHT HALF. HOW ?

Answer 1

Because light of sun on the exact half of the sun i.e, exact half of the moon is exposed to sun. So it becomes straight half

Answer 2

because our earth always rotates from east to west. hence we can see only a part of moon like half moon,gibbousmoon,crescent moon etc.so moon also rotates around earth at a particular angle.hence we can see it as a straight half.