GEOLOGY

Detailed explanation-1: -Most magma chambers sit far beneath the surface of the Earth. The pool of magma in a magma chamber is layered. The least-dense magma rises to the top. The densest magma sinks near the bottom of the chamber.

Detailed explanation-2: -The location beneath the vent of a volcano where molten rock (magma) is stored prior to eruption. Also known as a magma storage zone or magma reservoir.

Detailed explanation-3: -Magma rises through cracks from beneath and across the crust because it is less dense than the surrounding rock. When the magma cannot find a path upwards it pools into a magma chamber. These chambers are commonly built up over time, by successive horizontal or vertical magma injections.

Detailed explanation-4: -A long tube, called a pipe, connects the magma chamber to the surface. At the top of a pipe is an opening called a vent (most volcanoes have one primary vent, and one or more secondary vents). Magma leaves the volcano through the vent and becomes lava.