7.17 understand that a nucleus of U-235 can be split (the process of fission) by collision with a neutron, and that this product releases energy in the form of kinetic energy of the fission products

Nuclear power stations get there energy from a process of splitting atoms by collision with a neutron(as this releases energy). This is how...

If a slow moving neutron will get absorbed by an atom of uranium-235 (it will absorb into the nucleus). When this happens, the U-235 nucleus will split and spits out a small number of neutrons as it does.

This process releases energy (kinetic) and is converted into heat energy in the reactor by collisions with other atoms.