Penetrating abilities for alpha,beta,gamma

[JohnSmith1995]

Homework Statement

Im doing a science course and i came along a question saying this,

Give a wriiten explanation of the reason for the different penetrating abilities of different types of ionising radiation through paper,aluminuim and lead.

If anyone knows the answers or any links that would be great.

Cheers

 

[Borek]

http://lmgtfy.com/?q=reason+for+differences+in+penetrating+abilities+of+radiation