Radioactive Decay (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of process is radioactive decay?
What type of process is radioactive decay?
Random
What is the unit used to measure activity?
What is the unit used to measure activity?
Becquerel (Bq)
What is count-rate?
What is count-rate?
Decays recorded per second
What is an alpha particle?
What is an alpha particle?
A helium nucleus
How far can alpha radiation penetrate in air?
How far can alpha radiation penetrate in air?
~5cm
Which type of radiation is highly ionising?
Which type of radiation is highly ionising?
Alpha
In alpha decay, by how much does the mass number decrease?
In alpha decay, by how much does the mass number decrease?
4
What is a beta particle?
What is a beta particle?
An electron
In beta decay, how does the atomic number change?
In beta decay, how does the atomic number change?
Increases by 1
What thickness of lead is needed to stop gamma radiation?
What thickness of lead is needed to stop gamma radiation?
Few cm
How do gamma rays affect the nucleus?
How do gamma rays affect the nucleus?
Don't change charge or mass
Which emissions result in a new element being formed?
Which emissions result in a new element being formed?
Alpha and beta