Nuclear Reactions Answer Key
Compare fission and fusion reactions and understand radioactive decay.
Looking for Nuclear Reactions answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Nuclear Reactions Gizmo.
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Radioactive Decay
Q1.What is radioactive decay?
When an unstable nucleus loses energy by emitting radiation (alpha, beta, or gamma).
Q2.What's half-life?
The time it takes for half of a radioactive sample to decay. Each element has a fixed half-life.
Q3.If a sample has a half-life of 10 years, how much is left after 30 years?
3 half-lives: 1/2 → 1/4 → 1/8. So 12.5% remains.
Fission vs Fusion
Q4.What's nuclear fission?
Q5.What's nuclear fusion?
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