art, literature: What J M Barrie play features John, Michael and Wendy?

Questions

A jiffy is an actual unit of time for ---------- of a second. Thus the saying, I will be there in a jiffy!?

A jumbo jet uses ---------- gallons of fuel to take off.?

A large flawless ---------- is worth more than a similarly large flawless diamond.?

A large flawless emerald is worth more than a similarly large flawless---------- .?

A ---------- generates temperatures five times hotter than those found on the sun's surface.?