Condensation (i.e. water droplets) and dust.
A funnel cloud that touches the ground is commonly known as a tornado.
When a tornado has not touched the ground yet, it is called a funnel cloud. A funnel cloud is a rotating cone-shaped cloud descending from the base of a thunderstorm but not reaching the ground. Once it touches the ground, it is classified as a tornado.
To be classified as a tornado, a funnel cloud must reach the ground. Funnel clouds that do not reach the ground are typically referred to as non-tornadic funnel clouds.
A tornado's funnel cloud forms when warm, moist air rises rapidly and creates a rotating column of air. This spinning motion causes the air to condense into a funnel shape, which is visible as the iconic tornado funnel cloud.
A funnel cloud is a rotating column of air that does not reach the ground, while a tornado is a funnel cloud that extends to the ground and causes damage. Both are formed from the same weather conditions and can be associated with severe thunderstorms.
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.
tornado clouds
A tornado that does not touch the ground is a funnel cloud.
Not technically. It is the beginning of a tornado, but they are categorized differently. It is not considered a tornado until it reaches the ground with damaging winds.
A funnel cloud that touches the ground is commonly known as a tornado.
A funnel cloud is a developing tornado that has not reached the ground.
A funnel cloud is like a tornado only it does not reach the ground.
A tornado starts out as a funnel cloud.
The "eye" of a tornado is at the center of the funnel.
To some extent, yes. A funnel cloud is the visible portion of a tornado. However, not all funnel clouds are tornadoes. If the winds associated with a funnel cloud do not reach the ground then it is not a tornado. Conversely, if the winds do reach the ground the term funnel cloud is not usually used, and the event is simply called a tornado.
In a sense, yes. But the term funnel cloud usually means a "tornado" that has not touched down.
Without a funnel, a tornado will likely appear as a whirling cloud of dust or debris. If there is not enough of that present, then the tornado will be invisible.