What is gravity?
Gravity is a force pulling together all matter (which is anything you can physically
touch). The more matter, the more gravity, so things that have a lot of matter
such as planets and moons and stars pull more strongly.
Mass is how we measure the amount of matter in something. The more massive
something is, the more of a gravitational pull it exerts. As we walk on the
surface of the Earth, it pulls on us, and we pull back. But since the Earth
is so much more massive than we are, the pull from us is not strong enough to
move the Earth, while the pull from the Earth can make us fall flat on our faces.
In addition to depending on the amount of mass, gravity also depends on how
far you are from something. This is why we are stuck to the surface of the Earth
instead of being pulled off into the Sun, which has many more times the gravity
of the Earth.
Gravity is a force pulling together all matter (which is anything you can physically
touch). The more matter, the more gravity, so things that have a lot of matter
such as planets and moons and stars pull more strongly.
Mass is how we measure the amount of matter in something. The more massive
something is, the more of a gravitational pull it exerts. As we walk on the
surface of the Earth, it pulls on us, and we pull back. But since the Earth
is so much more massive than we are, the pull from us is not strong enough to
move the Earth, while the pull from the Earth can make us fall flat on our faces.
In addition to depending on the amount of mass, gravity also depends on how
far you are from something. This is why we are stuck to the surface of the Earth
instead of being pulled off into the Sun, which has many more times the gravity
of the Earth.
