The correct change of the given active voice sentence into the passive voice sentence is as given below: Why is a lie told by you? ... The active form in Simple past is 'did+tell' or Simple Past form of the verb. The object is made the subject and vice versa; 'by' is added.
Oceanic crust is thinner and denser than continental crust. Oceanic crust is more mafic, continental crust is more felsic. Crust is very thin relative to Earth's radius.