GEOLOGY

Detailed explanation-1: -A dome grows largely by expansion from within. As it grows its outer surface cools and hardens, then shatters, spilling loose fragments down its sides.

Detailed explanation-2: -Cinder Cone The ground shakes as magma rises from within the Earth. Then, a powerful blast throws molten rocks, ash, and gas into the air. The rocks cool quickly in the air and fall to the earth to break into small pieces of bubbly cinder that pile up around the vent.

Detailed explanation-3: -Conical Composite or Stratovolcano They are tall and steep because of repeated lava flows, volcanic ash, cinders, blocks and bombs, which are larger debris erupted from these volcanoes. These types of volcanoes are highly eruptive because of thick, silica-rich and gas content in its magma.

Detailed explanation-4: -Cinder cones are typically are made of piles of lava, not ash. During the eruption, blobs ("cinders") of lava are blown into the air and break into small fragments that fall around the opening of the volcano. The pile forms an oval-shaped small volcano.

Detailed explanation-5: -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.