The main part of the circulation of a tornado when the strongest winds occur is called the core.
That is not known. Not enough measurements have been taken from inside a tornado.
The only cloud you will actually find inside a tornado is the condensation funnel. Other clouds, such as the wall cloud and cumulonimbus are outside the tornado itself.
A tornado in the southern hemisphere is still called a tornado.
The air inside a tornado is cooler than its surroundings. This is not due to the wind or the fact that it comes from the sky, but from the fact that the pressure in a tornado is low. As air enters a tornado it is decompressed rapidly, and cools as a consequence. This is predicted by gas laws. In many cases the temperature inside a tornado is less than the dew point, which is why the funnel forms.
Yes. If a tornado is rain wrapped rain can be drawn into the circulation.
Objects inside a tornado are called debris.
The parent circulation of the tornado, called a mesocyclone, keeps a tornado going.
That is not known. Not enough measurements have been taken from inside a tornado.
Yes. There is plenty of air inside a tornado, even in the "eye." The pressure is low inside a tornado but certainly not an actual vacuum.
It depends. More than one tornado produce by a cyclic supercell are called a tornado family. Six or more tornadoes produced by the same storm system is called a tornado outbreak. If one tornado forms next to, and circles another it is called a satellite tornado. Another possibility is what is called a multiple vortex tornado. This is a tornado that has several smaller, more intense suction vorticies moving around inside it, almost like mini-twisters. However, it is still considered one tornado even though it may have two or more funnels.
The air pressure inside a tornado is very low.
Considering that you shouldn't go outside during a tornado, yes. You are much safer inside.
Air density inside a tornado is about 5-10% less than that of the air surrounding it.
The only cloud you will actually find inside a tornado is the condensation funnel. Other clouds, such as the wall cloud and cumulonimbus are outside the tornado itself.
Packages of instruments put into tornadoes are generically called probes.
Yes, People have survived inside the funnel of a tornado, especially in weaker tornadoes.
The pressure inside a tornado is much lower than it is outside.