Blackhole
This is called a black hole. It is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.
Gravity. Well, the strong nuclear force and the electromagnetic force can pull matter together, but electrical and magnetic forces can also repel. Gravity always attracts. This particular question is pretty obviously about gravity.
The three fundamental forces of matter are gravity, electromagnetism, and the nuclear strong force. Gravity is responsible for the attraction between objects with mass, electromagnetism governs the interaction between electrically charged particles, and the nuclear strong force binds protons and neutrons together in the atomic nucleus.
The state of matter with the highest potential energy is plasma. Plasma is a high-energy state of matter where the atoms are stripped of their electrons, leading to a high level of kinetic energy and potential energy due to the strong repulsive forces between particles.
The primary forces of the universe are gravity, electromagnetism, the weak nuclear force, and the strong nuclear force. These forces govern the interactions between matter and energy at the most fundamental level.
a black hole
Any concentration of mass will "suck in" energy and matter, due to its gravity; for example, a star.A black hole - to which the description presumably applies - has the characteristic that nothing gets out again.
This is called a black hole. It is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.
A black hole is a void in space-time where gravity is so strong that no matter or energy can escape the effects of its force.
Because the cake has a lot of matter and the pull of gravity (weight) is strong.
a singularity
The only kind of energy that dark matter is -- well, MATTER. Or mass, if you prefer, which is the same thing. We don't know what KIND of matter this stuff is, hence the name "dark." The only two things we know about dark matter is that (1) it interacts with baryonic matter via gravity but (2) it does NOT interact with baryonic matter via the electromagnetic force or the strong force. At this point, we're still working on what type of matter would do that.
The interaction of matter with other matter is called physical interaction or physical contact. This can involve forces such as gravity, electromagnetic, nuclear, and weak and strong interactions.
This is essentially correct. As we currently understand it, there are four basic forces in the universe. These are gravity, the strong and weak nuclear forces (strong and weak nuclear interactions), and the electromagnetic force. An electromagnetic wave is an expression of the electromagnetic force, and it is pure energy. There is no matter associated with electromagnetic waves. It might (or might not) be helpful to note that electromagnetic energy can be converted into matter, and we see this happen in an event we call pair production. A link is provided below to a related question for the curious investigator to use.
Gravity. Well, the strong nuclear force and the electromagnetic force can pull matter together, but electrical and magnetic forces can also repel. Gravity always attracts. This particular question is pretty obviously about gravity.
The three fundamental forces of matter are gravity, electromagnetism, and the nuclear strong force. Gravity is responsible for the attraction between objects with mass, electromagnetism governs the interaction between electrically charged particles, and the nuclear strong force binds protons and neutrons together in the atomic nucleus.
The area in space where gravity is so strong that it acts like a vacuum cleaner is called a black hole. In a black hole, the gravitational pull is so intense that nothing, not even light, can escape from it once it crosses the event horizon. This extreme gravitational force results from the collapse of massive stars at the end of their life cycles.