why do black holes have immense gravity?

Answer 1

Black holes are one of the densest objects in our known universe. They have a tremendous ammount of mass. So, which would have a greater gravitational pull, the earth or our sun which is hundreds of thousands of times greater? The Sun of course. It has more mass. However a black hole would win against the sun due to its immensly greater mass.

Answer 2

You could have also asked, "Why do things with immense gravity turn into black holes?"

All black holes have immense gravity because they form when things with immense gravity collapse in upon themselves.

Gravity comes from stuff, from mass. Everything has gravity. The more stuff you throw together in one place, the more gravity you get. Throw in enough stuff, and the strength of its gravity will get so strong that it will crush the stuff. If the gravity is strong enough (that is, if there is enough stuff), then the stuff will not be able to withstand the force of gravity at any level.

If a black hole suddenly appeared at the center of the earth, then the entire earth would collapse down into it. Cars, trucks, streets, buildings, people, air, birds, entire continents, volcanoes, lava, kitty cats, Noah, bagels, even cockroaches... they would all get crushed into the center of the black hole.

So basically, there is a certain amount of stuff that is just a bit too much. If you have just a bit less than that, you still will have to deal with very strong gravity, but you will not undergo total gravitational collapse. Throw a couple more wet dogs onto the pile of stuff and BOOM, it all collapses. The extra gravity of the two wet dogs just tipped the whole mess over the edge.

Answer 3

It's the large amount of mass that causes the intense gravity or warping of space, not the warping of space that causes the great mass. Gravity goes up as mass does, increase the mass enough and you have a black hole. Also, every object has a Schwarzchild radius, a radius for which if you compress the object down to that size, gravitational attraction between the constituent matter will not allow it to re-expand. For the earth, the Schwarzchild radius is nine millimeters. If you compressed the earth down to a ball of nine millimeters it would not re-expand.

Answer 4

Gravity is the attraction between two masses. The greater the mass, the greater the pull. Black holes have the inter-elemental space between the atomic particles squeezed out and had enormous mass in a tiny space, therefore the gravity pull is huge.

Answer 5

General relativity says that the mass of an object is determined by how much spacetime is curved. Black holes have "immense mass" because spacetime curvature of black holes are extreme. It's not required that mass be "made out of something", such as atoms and particles, which are not believed to exist inside black holes in ordinary form.

One way for black holes to form is from the gravtitional collapse of a neutron star, which is a dense aggregrate of neutrons. After the collapse into a black hole, the neutrons vanish, and what's left is just extreme curved spacetime.

Answer 6

Because of the amount of mass in a very small area. Mass creates gravity and the more dense the mass the more acute the gravity is.

I would tend think you could have more mass than a black hole but if the mass is spread out(less dense) then the gravity would be less acute but cover a much larger area than a black hole.

Answer 7

Because they have such an immense amount of mass all packed into one tiny space.

Answer 8

Because in a black hole mass intensely concentrated.

Answer 9

Because they have an immense amount of mass.

Answer 10

Take the whole mass of a star and compress it to fit into a single atom...thats why!