I don't think so - I don't think any convection is involved. I think boiling uses all three though - heat is conducted, this radiates out and heats the water which when heated starts a convection...
Gamma comes as a result of alpha or beta. Gammas covers a bigger area than beta and alpha and is in that way more dangerous, but if you ever get alpha radiation inside of you, that is very dangerous.
Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can...
No, radiation and electromagnetic radiation are not the same. Electromagnetic radiation is one form or type of radiation, and there are different types of radiation. Electromagnetic radiation speaks...