You cannot accurately identify a tornado based on the sound. That said, if you can hear a tornado it is probably already very close. You must take cover immediately. Heat to you basement or an interior room on the lowest floor of your house.
No, I won't. I would get myself evacuated from the tornado area.
It is safest to stay underground if you hear/see a tornado.
The mushrooms are kicking in.
Most likely not. Sometimes animals might know a storm is coming before we do, possibly because they can hear the thunder, but they probably cannot specifically know about a tornado.
If you can see the tornado
I would not inform the public about an approaching tornado with the internet and phone messages. I would not because usually if there is a tornado coming you lose power in the phone and internet lines as a tornado can go into the power critic. hope that helps.
I would expect to hear an echo in a gymnasium because if you think of a basketball bouncing just 1 you hear it coming right back at you.
yes!
No. If a tornado is coming you will not have time to board up your windows.
I would sugggest looking out the window constantly to see if you see a tornado. If you see a swirling cloud that looks like a tornado or hear a sound that sounds like a train, either get into your basement (I would suggest this) or, if you don't have a basement, get away from all windows and in the middle of your house. In ALL situations, bend over on the ground and put your hands covering the top of your head. lean your head against the wall. Wait until you think it is safe and wait for a while. Then go doing your normal stuff.
It can be purple or any other color. The color of the lightning has nothing to do with whether or not a tornado is coming.
it would be very bad because if there is a car coming if you couldn't hear where it is coming from you might be dead by now