A sheet of paper is used to make a paper boat. This is a:
physical and temporary
Temporary change:- Change that is for a limited time.
Physical change:- In a physical change no new substance is formed and the chemical composition of substance remains the same. There are changes in physical properties like shape, size etc.
Making a paper boat does not change the chemical composition of the paper (physical change) and paper that is converted to the paper plane can easily be brought back to its initial state whenever required (temporary change).