A funnel volcano is the most common tornado and is what most people think of when you mention a tornado. They are very violent and destroy almost everything in their path.
a funnel shaped vent at the top of a volcano is a crater
A crater
A crater
The opening of the volcano is called crater. A crater may be large in dimension or deep. This is where the magma erupts.
Its called a volcanic cone
a dome volcano is not the same as a cone volcano. a dome volcano is a type of volcano, is a roughly circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Usually it extrudes very slowly, but constantly. A cone volcano has an appearance of an upside-down funnel with a hole in the top which the lava shoots out of.
It's just a crater shapped like a funnel at the summit of the volcano, located at the top of the conduit or pipe through which the magma reaches the surface.
A funnel cloud may be called a condensation funnel or simply a funnel.
A crater can also be called a vent, and it is the funnel shaped opening at the top of a volcano which allows magma to escape as lava. The magma chamber is the hollow deep within the volcano which is supposedly linked to the core of the planet, bringing up molten rock from the middle of earth to be taken up the vent tube of the volcano to be released to the air.
A funnel is traditionally used.
The inventor of the funnel is Antonio Berlese, an Italian entomologist. The funnel was later modified by Albert Tullgren, and is sometimes called the Tullgren funnel or the Berlese-Tullgren funnel.
a long stemd funnel is a thistle tube funnel