Hazards & Uses of Radioactive Emissions & of Background Radiation (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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9 questions from this quiz
What is the half-life of a radioactive isotope?
What is the half-life of a radioactive isotope?
Time for half the atoms to decay
How does half-life vary between different radioactive isotopes?
How does half-life vary between different radioactive isotopes?
Each isotope has a unique half-life
What is the range of half-lives for radioactive isotopes?
What is the range of half-lives for radioactive isotopes?
Fractions of a second to millions of years
What happens to all radioactive isotopes over time?
What happens to all radioactive isotopes over time?
They gradually decrease in radioactivity
Why are isotopes with long half-lives considered dangerous?
Why are isotopes with long half-lives considered dangerous?
They emit radiation over a long time
What happens to isotopes with short half-lives?
What happens to isotopes with short half-lives?
They decay quickly
What is true about radiation from short half-life isotopes?
What is true about radiation from short half-life isotopes?
It may be intense initially
How does risk from short half-life isotopes change over time?
How does risk from short half-life isotopes change over time?
Risk diminishes rapidly
What role does half-life play in determining risk from radioactive isotopes?
What role does half-life play in determining risk from radioactive isotopes?
It plays a crucial role