Long Riddles and Answers

Question: Used to see, Far and wide, Beautiful views, Or a night time sky.

Question: What has ears, like a cat and a tail like a cat, but is not a cat?

Question: What is it that after you take away the whole, some still remains?

Question: An electric train is traveling south. Which way does the smoke go?

Question: What goes back and forth constantly, but never in a straight line?