Volcanoes Flashcards
What is another name for a destructive plate
Convergent
What is another name for constructive plate boundary
Divergent
What is another name for transform plate boundary
Conservative
What are the names of and active extinct and dormant volcanoes
Active: Mount St Helens (USA)
Dormant: Mount Fuji (Japan)
Extinct: Mount slemish (Antrim)
What are three positive impacts of a volcanos
Fertile land - good for farming and growing crops eg. Slopes of Mountain Vesuvius- fruit farms
Tourism- Pompei was destroyed in 79 ad, and is now preserved and has thousands of tourists coming to see it each year
Geothermal energy - In Iceland 90 percent of homes run on geothermal energy
Three negative impacts of a volcano
Loss of life
Disruption to flights
Lahar
Where are volcanoes mainly found
Hotspots and destructive plate boundaries
What is a volcano
A volcano is a mountain formed by the eruption of magma formed on the earths surface through a hole or vent in the earths surface eg. Mount Fuji, Japan
What is a fissure
A fissure is a long crack in the ground
What happens when lava erupts through a fissure
It makes a flat topped plateau eg the giants causeway County Antrim
What is the name of the mineral that changes the explosivity of a volcano
Silica
What is a pyroclast
Pyrolclasts are the little pieces of rock dust and gas that come out of a volcano when it is erupting
What are three jobs a volcanologist does
Monitors predicts and studies volcanic activity
What is the scale used to measure the explosivity of a volcano
VEI scale (VOLCANO EXPLOSIVITY INDEX)
