How to ask about an explanation how something “functions”?

Question

I struggle with expressing my desire for an explanation how a particular physical thing works?

E.g. How does this clock work? How does a refrigerator function?

Best thing I can come up with is 「動き方」

Answer 1

How about using the verb 「動く」 or the noun 「仕組み」...

How does this clock work?
「この時計はどうやって動いているんですか。」

How does a refrigerator function?
「冷蔵庫って、どういう仕組みになっているんですか。」