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6. when was the Japan Tsunami
- 11th June 2010
- 11th March 2011
- 26th April 2011
- 15th March 2011
7. how much volume of material is exploded from a super volcano
- 500000 km3
- 1435 km3
- 1000 km3
- 1 km2
8. where are oceanic trenches found and how deep are they
- destructive plate boundaries, 5,000-10,000m deep
- collision boundary, 10,000-15,000m deep
- constructive boundary, 5,000-10,000m deep
- conservative boundary, 8,000-10,000m deep
9. what is a phyroclastic flow
- magma chamber and earths crust
- horizontal eruption of ash gas and volcanic bombs that can travel 200km per hour
- eruption of lava
- ash flow
10. give 2 examples of issues with land use in the alps
- soil becomes stony and infertile and every 100m up it gets 1 degree cooler so hard for growing crops
- soil becomes less stony and there is lots of flat land for farming
- roads and rail ways cheap to build and easy access
11. give 4 advantages of living near a volcano
- loss of life, buildings destroyed, damage, visit geysers in iceland
- fertile slopes of m.t etna grow loverly tomatoes, geothermal energy in iceland, blue lagoon spa, after lava weathers fertile soil
- thermal waters, infertile soil, very safe, injury
12. collision plate
- two plates rubbing together causing earthquakes or move in the same direction but at different speeds
- fold mountain
- Two plates that push together and are forced up forming a fold mountain
- two plates pulling apart splitting land
- Two plates that push together one gets subducted beneath another
13. what is a geosyncline
- bowl shaped hole
- a depression between two plates
- gap in a plate
- a river
14. when was the Montserrat volcanic eruption
- July 1995
- July 2001
- August 1995
- April 1976
15. oceanic crust is older than continental crust
16. What is the mantle
- mainly iron and melted rock- 2200km deep
- soft like molten or melted rock - 2900km deep
- solid rock - 1600km thick 5500 degrees
- Solid Rock 8-65km thick
17. what is the outer core
- solid rock - 1600km thick 5500 degrees
- mainly iron and melted rock- 2200km deep
- Solid Rock 8-65km thick
- soft like molten or melted rock - 2900km deep
18. give 4 disadvantages of living near a volcano
- loss of life, injury, loss of property, loss of infrastructure
- great agriculture, ash contaminates water supply, mining from earthquakes, oil seeps through plates
- geothermal energy, blue lagoon spa, loss of communication, tourism
19. how are calderas formed
- formed when the magma chamber collapses after an eruption leaving a large bowl shape ground (depression)
- eruption occurs
- volcanic winter
- large bowl shape
20. large land slabs (continents) joined together millions of years ago are called
- Plate
- Plangea
- Tephra
- Lahar