That is not known. There are about 1600 tornadoes recorded worldwide on average. However, the real number is almost certainly much higher as many countries do not keep records of their tornadoes.
Tornadoes happen all around the world and it depend on your location as to how many tornadoes you will have.
No one could answer that because tornadoes have been destroying the world over before the dinosaurs.
Records for the whole world are not available. The U.S. had 1,339 recorded tornadoes that year.
No. Tornadoes do happen in Hawaii but they are rare.
In the United States. This is misleading however as this only applies to recorded tornadoes. many countries where tornadoes occur do not keep detailed record of them.
The U.S. gets 75% of all recorded tornadoes. This is misleading however as many countries do not keep records of their tornadoes and the actual percentage of tornadoes for the U.S. is probably much smaller.
Statistics for the whole world are not available. But a preliminary count shows 811 tornadoes hitting the U.S. in 2013, which is unusually low.
There have been many F5 tornadoes. See the link below for a list.
There are certain areas more prone to tornadoes and hurricanes. However, tornado and hurricanes happen all over the world, but many to not get much attention
The majority of U.S. tornadoes happen in Tornado Alley. However worldwide tornadoes are found in many regions,, though a large portion of these tornadoes are not documented.
Kansas aveages 95 tornadoes per year.
It depends on where you live. Tornadoes happen fairly often in the US as a whole, mostly during the spring or fall. However, they typically affect a very limited area. Even though the US is the most tornado-prone area in the world (for example, Europe is slightly larger than the US, but the US has four times as many tornadoes), there are almost no intense (>3 on the Fujita scale) tornadoes west of the Rocky Mountains.