Answer:
What can be measured but not seen?
Someone walked into a room and you heard a crash! Someone died. What happened?
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
What is so fragile that saying its name breaks it?
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.