Gravity on the moon is about 1/6 th the gravity felt on the earth. this is because a) the moon is so far away from the earth. b) the moon is much less massive than the earth. c) the earth has a molten core and the moon doesn't. d) the moon is so much further from the sun than the earth.

What is a compass? how does it work

You could say the relative location of washington, d.c.

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.