Uses of radiation (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
Why are gamma rays used to treat cancer in radiotherapy?
Why are gamma rays used to treat cancer in radiotherapy?
They penetrate deep into the body
Why are gamma rays preferred for medical tracers?
Why are gamma rays preferred for medical tracers?
They pass through & have short half-lives
Which type of radiation is used to sterilise food and medical equipment?
Which type of radiation is used to sterilise food and medical equipment?
Gamma rays
What half-life is needed for a sterilisation source?
What half-life is needed for a sterilisation source?
Long enough to avoid frequent replacement
Why is beta radiation used for thickness gauging?
Why is beta radiation used for thickness gauging?
It can partially pass through material
In thickness gauging, what happens if the material is too thick?
In thickness gauging, what happens if the material is too thick?
Less radiation passes through
Which radiation type is used to detect leaks in underground pipes?
Which radiation type is used to detect leaks in underground pipes?
Gamma
Which type of radiation is used in smoke alarms?
Which type of radiation is used in smoke alarms?
Alpha
How does smoke trigger a smoke alarm?
How does smoke trigger a smoke alarm?
Smoke absorbs alpha particles
What is true about short half-life radioactive sources?
What is true about short half-life radioactive sources?
They need replacing often
Why do medical tracers use short half-life sources?
Why do medical tracers use short half-life sources?
To avoid prolonged exposure to patient