A check is a paper. It is sent to you on your address/house. Then you give the paper to the bank and they will give you cash equivalent to the amount in the check
I wish they could make the payment in other methods Waiting for the check is really painful It might lose too!
It is a physical thing made of paper. You should encash it in bank. checks issued by google are Account payee.
I got many payments from adsense, but i did never used to get payment by cheque I just got my payments through western union. So you should select this option which is too easy process than cheque