The funnel of a tornado always connects to cloud base and typically all the way to the ground (the circulation of a tornado can reach the ground even if the funnel does not). Cloud base height is variable but in a tornado supercell is usually about 3000 feet to a mile above the ground. The circulation of the tornado usually goes a great distance above cloud base and can reach heights of more than 4 miles.
tornado
tornado
Not sure what you mean by a funnel tornado. If you are referring to the Seymour, Texas tornado of April 10, 1979, it had a well-defined funnel and it was funnel-shaped. However, it did touch down so it was not merely a funnel cloud.
A tornado that does not touch the ground is a funnel cloud.
A funnel cloud is like a tornado only it does not reach the ground.
A funnel cloud is a developing tornado that has not reached the ground.
The "eye" of a tornado is at the center of the funnel.
A tornado starts out as a funnel cloud.
Yes. A tornado is often visible as a funnel cloud as it develops.
It is called the funnel or, if you want to sound technical, the condensation funnel.
Yes. A classic tornado is a relatively narrow funnel shape extending toward the ground. A wedge tornado is enormous, appearing to be wider than it is tall.