GEOLOGY

Detailed explanation-1: -A volcano is a vent or chimney which transfers molten rock known as magma from depth to the Earth’s surface. 2. Lava erupting from a volcano is called magma when deposited on the surface of the earth.

Detailed explanation-2: -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.

Detailed explanation-3: -A volcanic vent is the place at the Earth’s surface where lava flows, tephra (pyroclastic materials consisting of volcanic ash, lapilli, or bombs), and fragmented rocks are erupted. Volcanic gases are also emitted at vents.

Detailed explanation-4: -Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth’s surface. Magma that has erupted is called lava. Some volcanic eruptions are explosive and others are not.

Detailed explanation-5: -A volcano is a vent from which the material from a magma chamber escapes. Volcanic eruptions can come from peaky volcanic cones, fractured domes, a vent in the ground, or many other types of structures. The rock in the magma chamber melts and is under high pressure.