Volcano

Volcanoes was where was called lava is comes down to the magma to the top and it's erupts.

Planets
Closest planet is lots of volcanoes in this worlds.

Habitat zone is have fever active volcanoes and lots of extinct volcanoes.

Far away planets is blow the ice up to warm only 2 active volcanoes

Moons
They do the same thing as the planets.

Lava pits
Lava pits is where all volcanoes use only fever planet allowed.

Gas or not gas volcanoes?
Gas it will be the smoke just like a fire camps, just 838 planets is not use gas for volcanoes in other planets like that that will never don't exists the place.

Gas volcanoes
Today our world have gas in here for that hot planets is more steam then the habitat planets and other cold planet.

The places where it will each has it's own steam.

Hot planets
Today there is lot of planets are with steams check at the top chart see the places where they put.

Warm planets
Like other planets their volcanoes was type called: Shield.

Cold planets
Not much steam really lava is melts it's large snowball planets.

Un-Gas volcanoes
Not really much planets their is steams is never steams a lot no smokes.