Formation of Volcanoes

Volcanoes often form where tectonic plates move apart or collide, such as in Iceland and the Cascade Mountains. The Ring of Fire is a notable area with many volcanoes. However, volcanoes can also form over hotspots, like those in Hawaii, where magma rises from the mantle.

What are hotspots and how do they relate to volcanic activity?

Explain the process of magma rising through the Earth's crust.