Answer:
I am the noblest musical instrument
I stand in one place yet fill the whole room. I can be filled with molten rock and come in every hue. What am I?
Flat as a leaf, round as a ring; have two eyes, can't see a thing. What am I?
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
My seas have no water, my mountains have no rock, and my land has no grass. What am I?
If you count 20 houses on your right going to the store and 20 houses on your left coming home, how many houses did you count?