GEOLOGY

Detailed explanation-1: -A volcano is defined as an opening in the Earth’s crust through which lava, ash, and gases erupt.

Detailed explanation-2: -A volcano is a weak spot in the crust where molten material, or magma, comes to the surface. Magma is a molten mixture of rock-forming substances, gases, and water from the mantle. When magma reaches the surface, it is called lava. When lava has cooled, it forms solid rock.

Detailed explanation-3: -main vent-this is the channel through which magma travels to reach the Earth’s surface. secondary vent-some magma may escape through the side of the volcano, particularly if the main vent becomes blocked. crater-this is found at the top of the volcano, where the magma erupts from.

Detailed explanation-4: -All volcanoes contain a central vent underlying the summit crater of the volcano. The volcano’s cone-shaped structure, or edifice, is built by the more-or-less symmetrical accumulation of lava and/or pyroclastic material around this central vent system.

Detailed explanation-5: -The crater is the bowl shaped opening located at the top of the volcano. The crater is also the steep sided walls made of hardened lava that surround the main vent. Lava can flow from the main vent, but not all volcanoes eject large amounts of lava.