An old presentation I made over the topic Black Holes when I was a kid at school for a school project.

5. When a Large Star runs out of Fuel it can no Longer
Support its Heavy Weight.
The Pressure from the star's massive layers of
hydrogen press down Forcing the Star to get
smaller and smaller and smaller.
Eventually the Star will get Smaller than an Atom.
Thus the mass of Star is Small and Volume is the
same this Build up Infinite Amount of Gravity and
BLACK HOLES are made when the Center of a very
Big Star Falls in upon itself, or Collapses.

6. .

12. In 1931, Subrahmanyan Chandrasekhar calculated,
using Special Relativity, that a non-rotating body of
Electron-Degenerate Matter above a Certain Limit
1.4 Solar Masses) has No Stable Solutions.
A Star’s size is measured Solar Masses
The currently Accepted Value of the Limit is about
1.39 ( 2.765 × 1030 kg)

18. An accretion disc is a structure formed by diffuse
material in orbital motion around a massive central
body. The central body is typically a star. Gravity
causes material in the disc to spiral inward towards
the central body.
Accretion leads to release of gravitational energy.
Inner regions of disks rotate very rapidly – near the
speed of light.
The luminosity of a black hole is limited by its mass.

23. FIRST
BLACK
HOLE

26. 26
On Earth, let’s say you weigh 150 kg.On the Moon,you’d weigh 25 kg.On Jupiter,you’d weigh 350 kg.On the Sun, you’d weigh4,000 kg.
Neara BlackHole,
you’d weigh over
20 TRILLONkg !!!