Question 1
nuclear processes which involved the splitting of a heavy nucleus into 2 nuclei with smaller mass numbers is called
fusion
nuclear chain reaction
spent rods
fission

question 2
when u-235 absorbs a neutron and becomes the unstable nucleus of u-236, this is the beginning of a(n)
a chain reaction
nuclear fusion
spent rods
exothermic reaction

question 3
nuclear power plants use the principle of
exothermic reactions
spent rods
nuclear fusion
controlled nuclear fission

question 4
two serious negatives about nuclear power plants:
1. a potential meltdown of the plant releasing huge amounts of radiation
2.
hard to find safe nuclear waste disposal of radioactive materials that are radioactive for thousands of years
unleashed chain reactions
nuclear fusion
critical mass

question 5
biological effects of exposure to radiation include:
1. the penetrating ability of the radiation into tissues
2.
uncontrolled chain reactions
nuclear fission
nuclear fusion
the ionizing ability of radiation to affect cell functions