also, how come the sky is blue?
And the sea for that matter?
Can you tell me what happens when a plane passes the sound-barrier? I know it makes a bang, but why?
Or why an ambulance's siren changes pitch when it passes you?
How come when you put a little pingpong ball in a stream of air(like from a vacuum set to blow), it floats there in place, instead of floating off to the side and dropping down?
Why does a tiny piece of paper in a glass of water always drift to the side of the glass?
What's with iron bending perfectly, but when you bend it back and forth, it breaks?
Why do we call it an encyclopedia?
Which is hotter, molten sugar, or molten salt? And why?
I'm out for now
