The gravitational force of the moon is one ten-millionth that of earth, but when you combine other forces such as the earth's centrifugal force created by its spin, you get tides. The sun's gravitational force on the earth is only 46 percent that of the moon.
If you were doing a block of text you would normally do double spacing and in this case, using same margins and same font you would get an average of 480 words, but with normal text the norm is usually around 300 words to a page. Not enough parameters to answer.
For a page with 1 inch margins, 12 point Times New Roman font, and minimal spacing elements, a good rule of thumb is 500 words for a single spaced page and 250 words for a double spaced page.