I have learnt that there are three different types of volcanoes they are active dormant and extinct. An extinct volcano is a volcano that hasn’t erupted in 10,00 years and isn’t expected to erupt again. A dormant volcano that hasn’t erupted in a couple thousand years but there is a chance it will erupt again. An active volcano is a volcano that has erupted a few hundred years ago and will probably erupt again. If you live by an extinct volcano you will be safe. When the lava is inside the volcano it is called magma. Volcano eruptions are caused when two tectonic plates rub together.