How are volcanoes formed?

Answer by  Hattie (14)

Volcanoes are formed on borders between tectonic plates. Shield volcanoes are created on tensional plates (plates which are moving apart). Magma rises out of the gap they create and flows slowly creating a hill which sets into rock. fold volcanoes are formed on compressional plate boundaries (moving towards each other). Lava from beneath the earth's surface solidifies and bends upwards.

Answer by  Nanthawat (131)

Volcanoes are formed when magma from underneath the Earth's crust pushes upwards forming a bulge on the surface of the Earth. Sometimes volcanoes are formed when two crusts clashes with each other, forming an opening where magma can escape.

Answer by  Pete59 (83)

Volcanoes form when hot melted rock (magma) from the interior of the earth makes its way to the surface through cracks in the earth's crust. The typical cratered mountain shape is formed by material that the volcano emits.

Answer by  labgirl (333)

Volcanoes form where molten lava from deep within the earth seeps up between cracks in underground plates. Cooled lava accumulates over time to form the volcano's mountain.