1) The most ionising form of nuclear radiation a) Alpha b) Beta c) Gamma 2) This form of decay is caused by a neutron turning into a proton a) Alpha b) Beta c) Gamma 3) Highly penetrating wave of energy a) Alpha b) Beta c) Gamma 4) Half life is measured in a) seconds b) minutes c) hours d) days e) millions of years f) all of these 5) 1 Becquerel (Bq) is equal to a) One decay per hour b) One decay per second c) Ten decays per minute d) Ten decays per year 6) Half life? a) 2 hours b) 6 hours c) 70,000 counts per second d) 35,000 counts per second 7) What % of the original radioactive sample remains after 1 half life a) 100% b) 50% c) 25% d) 12.5% e) 6.25% 8) What % of the original radioactive sample remains after 3 half lives a) 100% b) 50% c) 25% d) 12.5% e) 6.25% 9) The fraction of radioactive nuclei remaining after 8 minutes a) 1/2 b) 1/4 c) 1/8 d) 1/16 10) The fraction of radioactive nuclei remaining after 16 minutes  a) 1/2 b) 1/4 c) 1/8 d) 1/16

Nuclear radiation review

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