Quiet volcanoes can be either dormant or extinct. An extinct volcano, as you may have guessed, has not erupted for a very long period of time and will not erupt in the future. A dormant volcano, however, is just sleeping. You probably get up all groggy after a good sleep.
If you mean volcanoes that erupt quietly, as in not explosively, then those are generally shield volcanoes.
Shielf volcanoes generally produce "quiet" eruptions. Explosive eruptions are rare.
There are three different types of volcanoes. The types of volcanoes are shield volcanoes, dome volcanoes, and also composite volcanoes.
magma that is low on silica & thin and runny & it flows easily
shield volcanoes
There are four main types of volcanoes. These include shield volcanoes, cinder cones, composite volcanoes, and lava domes.
Eruptions at shield volcanoes are almost always non-explosive.
stalkers
There are 3 kinds of volcanoes which are found around the world. They are shield volcanoes, cinder cone volcanoes, and composite volcanoes. Many of the most beautiful mountains in the world are composite volcanoes.
ant volcanoes
Because shield volcanoes have lava flows rather than explosive eruptions, they are much quieter than other types of volcanoes. Regardless, shield volcanoes are among some of the largest in the world.
It is Quiet, Explosive, Intermidiate
A loud noise...