On the edges of plate boundaries
a lot
The two major plate boundaries that cause volcanoes to exist along the Cascade Range in the Pacific Northwest are the convergent boundary between the Juan de Fuca Plate and the North American Plate, and the divergent boundary where the Juan de Fuca Plate is being subducted beneath the North American Plate. These tectonic processes lead to magma generation and volcanic activity in the region.
A planet with active volcanoes will have fewer craters, as older craters will tend to be buried by lava and ash.
The amount of volcanoes will tend to increase, which will impact farming in a negative way by decreasing the amount of available farmland.
No, oceanic crust hot spot volcanoes tend to erupt with less explosiveness compared to subduction zone volcanoes. The lava from hot spot volcanoes is typically less viscous, allowing gases to escape easily and reducing the likelihood of explosive eruptions.
ice valcanos do exist
Yes, they exist, but they do die.
Yes, volcanoes still exist and many are still active.
No. All volcanoes will eventually go extinct and erode away.
a lot
Yes, at least partially so. There are actually a series of ancient volcanoes located in New Hampshire that date back to the Devonian time period. Over time most of these volcanoes eroded away, however a few still exist such as Mount Pawtuckaway and the Ossipee Mountains.
Well, if volcanoes didn't exist, neither would the earth. Since volcanoes helped build the earth.
yes, they tend to be on plate boundaries :)
The two major plate boundaries that cause volcanoes to exist along the Cascade Range in the Pacific Northwest are the convergent boundary between the Juan de Fuca Plate and the North American Plate, and the divergent boundary where the Juan de Fuca Plate is being subducted beneath the North American Plate. These tectonic processes lead to magma generation and volcanic activity in the region.
They usually exist on a hotspot. An example: Mauna Loa, Hawaii
The islands were formed from erupting volcanoes.
No, they exist on the planets Venus and Mars as well as Io, a moon of Jupiter.