Short simple riddles

What goes in dry and hard, but comes out wet and soft?

I have no legs. I will never walk, but always run. What am I?

Four children and their pet dog were walking under a small umbrella. But none of them became wet. How?

I can run, but not walk. Thought is not far behind me. What am I?

Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers, magazines and journals. What am I?

Which vehicle is spelled the same forwards and backwards?

I am small. I can be scary. I have eight legs. I spin a web. What am I?

How can you leave a room with two legs and return with six legs?

I am a nut with a whole. What am I?

Everyone has it and no one can lose it, what is it?