I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?

I contain five little items of an everyday sort. You can find all five in a tennis court. What am I?

What costs nothing but is very hard to find and can easily be lost?

What falls but does not break, and what breaks but does not fall?

With the rich, I am blue, with the poor I am red, with the amphibian I am cold, but with the dog I am hot instead. What am I?

The person who made it never used it, and the person who used it never saw it. What is it?

What grows up while growing down?

Every night and every morning I am told what to do and I do it, yet everyone is still mad at me? What am I?

What is the difference between a schoolboy studying and a farmer watching his cattle?

How do you spell hard water with only three letters?