Gravity is the force that pulls things towards the center of the Earth. All objects have this property. Objects bigger in size tend to have more of a gravitational pull. Objects smaller in size tend to have less of a gravitational pull. This applies to our nine planets, too! In our solar system, distance from the Sun affects how much gravity a planet has. How much does gravity differ among our planets? Let's find out! |
Just because an object is bigger in size, doesn't necessarily mean it'll have more of a gravitational pull than a smaller object. The key factor in gravity is the object's "mass." An object's mass is basically how dense (or "compact") it is with regard to its size. An inflated balloon may be bigger in size when compared to a small lead fishing weight. The balloon, however, is less dense than the fishing weight - it's mostly air. Because the fishing weight is more "massive" than the balloon, the fishing weight (even though it's smaller) would have more of a gravitational pull. |