SCIENCE WEEK 1 3Q Flashcards
An opening in the earth’s crust from which lava, ash, and hot gases flow or are ejected during an eruption.
Volcano
A basin-like depression over a vent at the summit of the cone and also known as the mouth of a volcano.
Crater
It is the opening through which eruption takes place.
Vent
A channel or pipe conveying liquid materials such as magma.
Conduit
Is a hot fluid or semi-fluid material below or within the earth’s crust that is usually made from molten rocks inside the earth.
Magma
The rock or magma is expelled from a volcano during an eruption
Lava
It is dependent on the plates which form the top layer on the mantle
Formation by subduction
A region of high volcanic activity not located at any plate boundary
Hotspot
it is erupting lava, releasing gas or generating seismic activity.
Active volcanoes
that are not currently active, but may be either dormant or extinct
Inactive volcanoes
It has a broad, gently sloping landform built by many layers of low-viscous lava flows which cannot be filed up into steep mounds.
Shield volcano
A type of volcano that has a steep conical hill formed above a vent that is composed mostly of basalt
Cinder cone volcano
-Is one constructed of alternating layers of pyroclastic materials and solidified lava flows.
-with high silica content
Composite volcano
It is a volcanic crater that is formed when a part of the wall of the crater collapses following an explosive eruption
Caldera
-it is a stream-driven eruption as the hot rocks come in contact with water
Hydrothermal
