Answer:
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
What turns everything around but does not move?
What kind of nut is empty at the center and has no shell.
My first keeps time, my second spends time, my whole tells time.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is an arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows. My last will put an end to it all.
Dry though I may be, I am still a sea.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?