Radioactivity Flashcards
In oder from most to least penetrating radiation we have
Gamma, Beta, Alpha
Which type of radiation is the most ionising?
Alpha
Which type of radiation is least ionising?
Gamma
What type of radiation can be stopped by a piece of paper?
Alpha radiation
What type of radiation can be stopped by approximately 5cm of air?
Alpha radiation
What type of radiation can be stopped by 1m of air
Beta radiation
What type of radiation can be stopped by a 5mm piece of Aluminium?
Beta radiation
What type of radiation can be stopped by a thick lead sheet?
Gamma radiation
————– is the process by which unstable atoms emit radiation until they become stable?
Radioactive decay
Name the most penetrating type of radiation?
Gamma
Name the instrument used to detect radioactivity?
Geiger counter
Which of these is not a method for safely handling radioactive materials?
Picking it up using your hands
When does radioactive decay occur?
When the nucleus of an isotope is unstable
