Gravity

The bigger the object is the stronger the gravitational pull will be. As the Earth is much bigger than any object on it, (including people and animals), each object is attracted to the Earth’s surface by its gravitational pull.

Gravitational pull is the amount of force that is exerted by larger objects over smaller objects. As Sir Isaac Newton described, gravitational pull is the force that is proportional to the mass of two different objects.

Sir Isaac Newton is believed to be the first scientist to really study and do experiments with gravity and motion.

As the moon is smaller than the Earth, it has a smaller gravitational pull because it has less mass and less weight. Because of this, if you were to go to the moon, you would easily bounce up and down as you tried to walk. You would feel rather weightless. Even with its lesser gravitational pull, the moon’s gravity directly affects the Earth’s tides. The closer the moon is to the Earth will result in higher ocean tides. As the moon moves away from the Earth, the gravitational pull weakens and the ocean tides lower. Finally, if there was no gravitational pull between the Earth and the moon you wouldn’t even see the moon because it would simply float away from its orbit.

Weight deals primarily with gravity. This is because the amount that an object weighs is directly based on the amount of gravitational force or the gravity that is pulling the object down. The stronger the pull of gravity is, the more the object will weigh. The weaker the pull of gravity is, the less the object will weigh.