Forces of Nature

Force Relative Strength* Particles involved What it does
Strong Nuclear Force 1 Quarks** Holds the nuclei of atoms together
Electromagnetism 10-12 Electrically Charged particles Holds atoms together, the rules of electricity and magnetism
Weak Nuclear Force 10-14 Quarks, electrons, neutrinos Radioactive decay of atoms (breakdown) and the decay of neutrons
Gravity 10-40 All particles Holds everything together, controls motion of everything

* - the relative strength column shows how each force compares to the Strong Nuclear Force - how many times weaker they are actually.
** - quarks are the building blocks of protons and neutrons