a) Differences between Electromagnetic and Nuclear Radiation:
1) One of the differences could be that nuclear radiation is emitted in nuclear radiation. Electromagnetic radiation instead, in any situation.
2) We can say that nuclear radiation is the electromagnetic radiation that occurs in nuclear reactions.
Nuclear radiation could be very hazardous, but electromagnetic only high-energy from it is really hazardous.
b) We can say that nuclear radiation is the term for any energy or particle that comes out of a nucleus that decays or fissions. The kinds of things that come out of a decaying nucleus are 3 main types: Alpha, Betha, and gamma radiation.
Electromagnetic is often thought of as a photon, a virtual particle that conveys energy from one place to another at the speed of light.
Gamma rays (radiation) are photons at very short wavelengths, very high frequencies, and the very high energy end of the spectrum, including everything above x-rays.