Good Riddles

Question: What can you see but not hear?

Question: Shake me and I'll do what you want,
but first you have to pull me from the ground.
I'm on the tip of your tongue and over your shoulder.

What am I?

Question:

The dirtier I am, the whiter I get,
Leave a mark on me when you stand, I'll leave a mark on you when you sit.

What am I?

Question: What English word is always spelled incorrectly?

Question: How can you make a TV, a bed, a dog, and a car liquid?