The Atom, The Nucleus, and Radioactivity (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
Who discovered radioactivity in 1896?
Who discovered radioactivity in 1896?
Henri Becquerel
What is radioactivity?
What is radioactivity?
Spontaneous breakdown of unstable nuclei
What are alpha particles?
What are alpha particles?
Helium nuclei
What is the nature of beta particles?
What is the nature of beta particles?
High-speed electrons from nucleus
What is the charge of gamma radiation?
What is the charge of gamma radiation?
0
In an electric field, which way are alpha particles deflected?
In an electric field, which way are alpha particles deflected?
Toward the negative plate
How do beta particles behave in a magnetic field?
How do beta particles behave in a magnetic field?
Deflect toward positive pole
What material stops alpha radiation?
What material stops alpha radiation?
Thin sheet of paper
What is needed to significantly reduce gamma rays?
What is needed to significantly reduce gamma rays?
Thick concrete or lead
Which type of radiation has the greatest ionising ability?
Which type of radiation has the greatest ionising ability?
Alpha
What is the relationship between ionising ability and penetrating power?
What is the relationship between ionising ability and penetrating power?
Inverse: more ionising = less penetrating
In alpha decay, by how much does the mass number change?
In alpha decay, by how much does the mass number change?
Decreases by 4
In beta decay, what happens to the atomic number?
In beta decay, what happens to the atomic number?
Increases by 1