Answer:
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
What gets colder as it warms up?
I cannot be felt, seen or touched; Yet I can be found in everybody; My existence is always in debate; Yet there is a style of music named after me.
You are on an electric train. Which direction will the smoke fly in?
I am the first you ever saw, what greets you every morning and what goes out in the end.
People take me on walks and I run and have fun. What am I?