it depends on how strong the tornado is the stronger it is the bigger it will be
Tornado Alley takes up much of the Great Plains in the central U.S.
It depends on the intensity of tor tornado. The heaviest objects known to have been lifted by a tornado was a 90 ton oil tank. The intensity of the tornado that did this was likely well into the F5 range.
get up under the a desk and hold your hands over your head
Nowhere in particular. If a tornado picks you up (which actually doesn't happen as often as many people think) it will just carry you some distance before dropping you back down.
A tornado cleans up the atmosphere by removing the pollution in the atmosphere.
Tornado Alley takes up much of the Great Plains in the central U.S.
It doesn't take up much area on the ground (it's roots branch downward)
A typical tornado is perhaps 100 yards wide and 10,000 feet tall. This gives a volume of roughly 700 million cubic feet.
If the tornado is strong enough, yes. It would normally take at least an EF2 tornado to lift a truck.
An EF0 tornado can't pick up much of anything, so probably not.
Yes. While a cinder block may seem heavy to us, it has a large surface area. It would likely not take a very strong tornado to lift a cinder block that has not been mortared.
About 4,132 miles long
Yes. The storm that produced the Joplin tornado also produced hail up to 1 inch in diameter in the Joplin area.
That is extremely difficult to estimate and would depend on the size and strength of the tornado and what there is to pick up. A large, violent tornado moving through a developed area might be carrying many thousands of small objects.
There is no such thing as a "cyclone 5 tornado." You can have a category 5 hurricane or an EF5 tornado. In either case, the answer would be no; there is too much turbulence.
The heaviest object known to have been picked up by a tornado was an oil tank that weighed 90 tons.
jelly