P7- Radiation Flashcards
What are the 3 types of radiation
Alpha, Beta and Gamma
What is alpha radiation made of?
A helium nucleus
What is beta radiation made of?
A fast moving electron
What is gamma radiation made of?
A gamma ray
How strong is alpha’s ionising power?
Very strong
How strong is beta’s ionising power?
Middle
How strong is gamma’s ionising power
Weak
How strong is alpha’s penetrating power?
Weak
How strong is beta’s penetrating power?
Middle
How strong is gamma’s penetrating power?
Strong
How far can alpha radiation travel?
A few cm
How far can beta radiation travel?
Around 1m
How far can gamma radiation travel?
Infinitely
What is alpha radiation stopped by?
Skin/ paper
What is beta radiation stopped by?
Thin aluminium
What is gamma radiation stopped by?
Thick lead/ 1m of concrete
Which type of radiation has the highest ionising power?
Alpha
Which type of radiation has the lowest ionising power?
Gamma
Which type of radiation has the strongest penetrating power?
Gamma
What type of radiation has the lowest penetrating power?
Alpha
Which type of radiation travels the furthest?
Gamma
