Geography- Physical 2.b. Volcanic Eruption Hazards

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  • Created by: 13clarken
  • Created on: 24-04-19 22:24
Volcanic Hazard: Basaltic ... is free-flowing and can run for long distances. The impacts depend on the different types of ... Everything in the path of ... will either be burned, bulldozed or buried. Although they destroy, there is rarely any death
Lava Flows
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Volcanic Hazard: A combination of very hot gases, ash, and rock fragments travelling at high speed. They follow ground contours and destroy everything in its path. Inhalation of the hot and poisonous gases and ash cause instant death
Pyroclastic Flows
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Volcanic Hazard: Eruptions emit a wide range of toxic ... which pose a silent but deadly threat to humans. Acid rain is produced when SO2 combines with water which enhances weathering and can damage crops, soils and surface water
Volcanic Gases
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Volcanic Hazard: Describes any material ejected from a volcano into the air. The size of products ranges, and lighter debris is also ejected. It can be very hazardous burying crops and disrupting transport
Tephra
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Volcanic Hazard: Type of mud flow with a consistency of wet concrete. Snow and ice melt and mix with rock fragments, ash and soil. They travel at 50km/h and either destroy or bury everything in its path under thick debris
Lahars
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Volcanic Hazard: Violent eruptions can cause large displacements of water and ... waves travelling at 600km/h and 4m high in deep water. They increase in height at shores and transfer large amounts of energy
Tsunamis
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Composite Volcanoes: Gas rushes up through sticky lava and blasts ash and fragments into the sky in a huge explosion.Immense gas clouds and volcanic debris is created. Gas clouds and lava can rush down the slopes. Part of the volcano is blasted away
Plinian
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Composite Volcanoes: Violent gas explosions blast out sticky or cooled lava. Fragments build up into cones of ash and pumice. The eruptions occur when there is very viscous lava which solidifies rapidly after an explosion
Vulcanian
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Composite Volcanoes: Characterised by very powerful blasts of gas pushing ash clouds high into the sky. They are more violent than vulcanian eruptions. Lava flows also occur, and ash falls to cover surrounding areas
Pelean
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Composite Volcanoes: Characterised by persistent fissure eruptions. large quantities of basaltic lava build up and vast horizontal plains. On a large scale they have formed the Deccan plate Plateau and the Columbian Plateau
Icelandic
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Composite Volcanoes: Characterised by frequent gas explosions which blast fragments of runny lava into the air to form cones. They are very explosive eruptions with large quantities of pyroclastic rock thrown out
Strombolian
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Composite Volcanoes: Involves more noticeable central activity than the Icelandic type. Runny basaltic lava travels down the sides of the volcano in lava flows. Gases escape easily and occasional pyroclastic activity occurs but this is less important
Hawaiian
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Other cards in this set

Card 2

Front

Volcanic Hazard: A combination of very hot gases, ash, and rock fragments travelling at high speed. They follow ground contours and destroy everything in its path. Inhalation of the hot and poisonous gases and ash cause instant death

Back

Pyroclastic Flows

Card 3

Front

Volcanic Hazard: Eruptions emit a wide range of toxic ... which pose a silent but deadly threat to humans. Acid rain is produced when SO2 combines with water which enhances weathering and can damage crops, soils and surface water

Back

Preview of the front of card 3

Card 4

Front

Volcanic Hazard: Describes any material ejected from a volcano into the air. The size of products ranges, and lighter debris is also ejected. It can be very hazardous burying crops and disrupting transport

Back

Preview of the front of card 4

Card 5

Front

Volcanic Hazard: Type of mud flow with a consistency of wet concrete. Snow and ice melt and mix with rock fragments, ash and soil. They travel at 50km/h and either destroy or bury everything in its path under thick debris

Back

Preview of the front of card 5
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