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nuclear fusion
creates energy by converting matter to energy, clean form of energy, not yet possible
nuclear fission
splits atoms to create energy, potentially dangerous, creates waste
radioactive atoms
when atoms are unstable they may expel energy to try and become stable (1:1 protons to neutrons)
alpha particle
2 protons 2 neutrons (blocked by paper)
beta particle
electrons (blocked by thin wood)
gamma particle
electromagnetic (blocked by lead or concrete)
