What Am I Riddles

Question: What's wet and dry Takes you low Moves real fast And kills you slow ?

Question: I climb to the top I dive below I return again For another show.

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

Question: I am apart of everything, including you. Once I die, I will begin anew. As my life status becomes dire, I burn brighter and brighter. What am I?

Question: What's yours but people use it more then you?