The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called
Options: they emit light of a constant intensity, their distance from the earth does not change with time, they are very far away from the earth resulting in decrease in intensity of light, they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable
Pythagoras was first to ____ the universal validity of geometrical theorem.
Options: give, prove, both, None of the above
The term hit wicket in cricket refers to
Options: when the bowler bowls out three batsman with three successive balls, when the batsman intercepts the ball with his leg or any part of his body between the wicket, when the batsman, while hitting the ball, strikes his own wicket with his bat or body and is declared out, None of the above