The effecst depend on the size and strength of the tornado and on where it hits. In many cases some kind of damage will occur to vegetation and/or property. In most cases the damage will be notable but not particularly severe. People may be killed in such situations, but deaths are rare. Stronger tornadoes can very badly damage or destroy man-made structures and can tear apart large numbers of trees. These tornadoes result in fatalities more frequently. In the worst cases everything in a localized area may be completely destroyed. Such tornadoes often result in multiple deaths. Where a tornado occurs is also crucial. Some tornadoes move through sparsely populated countryside, hitting little or nothing and so causing fairly little damage if any. Some tornadoes hit communities, sometimes even major cities. Weak tornado still usually do not cause large amounts of damage, but when this happens with violent tornadoes the effects can be devastating. In the worst cases whole neigborhoods can be destroyed and dozens killed.
The area in which the tornado happens can erode the area away cause the animals that lived there to have no home or die of the tornado
The tornado is a twister before it hits the ground, it just spins in the sky, kind of
Nothing happens. The lightning will not affect the tornado.
Damage is done to varying degrees depending on the intensity of the tornado on the Fujita scale.
it stays on the ground until it weakens
The tornado is not affected. It will continue though the valley as it would over any other terrain.
Air at ground level will then spiral into the tornado and reach great speeds. Any buildings or trees the tornado hits will be damaged or destroyed by the winds.
It is inevitable that Orlando will eventually have a tornado, as it is in a tornado prone area. However we won't know when the next one will be until it actually happens.
Trees and vegetation in the path of the tornado may be damage or destroyed. Exceptionally violent tornadoes may scour away grass and even soil.
You die
If a tornado hits a body of water (at which point it is called a waterspout) it can "suck up" some unlucky fish. These fall back to earth a little later.
The car would be taken up in the air and destroyed and if your in the car then the chances of living is moderate