What Am I Riddles

Question: You use a knife to slice my head and weep beside me when I am dead.

What am I?

Question: I can be dropped from the tallest of buildings and survive,but drop me from the smallest ship and I won't.What am I?

Question: I have every color, but no gold.

What am I?

Question: What has an eye but cannot see, takes time to generate, and can dissipate in seconds?

Question: What speaks with its ear, listens with its mouth, and has 10 digits but no hands?