Hazards & Uses of Radioactive Emissions & of Background Radiation (AQA GCSE Physics): Quizzes
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8 questions from this quiz
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Practise the questions
8 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
Is the half-life property the same for all radioactive isotopes?
Is the half-life property the same for all radioactive isotopes?
No, it is unique to each isotope
What is the range of possible half-lives for radioactive isotopes?
What is the range of possible half-lives for radioactive isotopes?
Fractions of seconds to millions of years
What happens to the radioactivity of all isotopes over time?
What happens to the radioactivity of all isotopes over time?
Decreases gradually
Why do isotopes with long half-lives pose a prolonged risk?
Why do isotopes with long half-lives pose a prolonged risk?
They emit radiation over a long time
How quickly do isotopes with short half-lives decay?
How quickly do isotopes with short half-lives decay?
Quickly in a shorter time
What is true about initial radiation from short half-life isotopes?
What is true about initial radiation from short half-life isotopes?
May be intense initially
How does risk change for isotopes with short half-lives as they decay?
How does risk change for isotopes with short half-lives as they decay?
Risk diminishes rapidly