Flashcards
Volcanoes and Tectonics
Cards in this deck (18)
- 1What is Magma?the molten mixture of rock-forming substances, gases and water from the mantle
- 2What is LavaLiquid magma that reaches the surface
- 3Hot SpotAn area where magma from deep within the mantle melts through the crust above it
- 4Magma ChamberThe pocket beneath a volcano where magma collects
- 5VentThe opening through which molten rock and gas leave a volcano
- 6Lava FlowThe area covered by lava as it pours out of a volcano's vent
- 7CraterA large round pit caused by the impact of a meteoroid
- 8SilicaA material found in magma that is formed from the elements oxygen and silicon
- 9Pyroclastic flowThe flow of ash, cinders, bombs, and gases down the side of a volcano during an explosives eruptions
- 10DormantNot currently active but able to became active in the future
- 11ExtinctTerm used to refer to a group of realted organism that has died out and has no living members
- 12CalderaThe large hole at the top of a volcano formed when the roof of volcano's magma chamber collapses
- 13Cinder Conea steep, cone shaped hill or small, mountain made of volcanic ash, cinders, and bombs piled up around a volcano's opening
- 14Composite VolcanoA tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials
- 15Shield volcanoa wide, gently sloping mountain made of layers of lava and formed by quiet eruptions
- 16Volcanic necka deposit of hardened magma has come to the surface
- 17Silla slab of volcanic rock formed when magma squeezes between layers of rock
- 18Batholitha mass of rock formed when a large body of magma cools inside the crust