Volcanoes

VolcanoesTypes of volcanoes1. Shield VolcanoRounded, gentle slopes and large basesLava is usually fluid and flows easilyEx. Hawiian Islands, Kilauea, Manua Loa

2. Cinder Cone VolcanoSteepest sloped volcanoLava is thick with gas trapped insideEruptions are usually violentEx. Sunset Crater, Arizona

3. Composite Volcano (stratovolcano)Produced when there is a series of alternating eruptionsConsists of layers of ash, and cinders alternating with lavaUsually formed on continental platesEx. Mt. St Helens, Mt Fuji, Japan

Video clipVolcano Anatomy

Pahoehoe Lava

AA Lava

Mt Vesuvius clipThe Hawaiian Islands were created in this way?

sea floor spreadingconvergent boundarieshot spotsI dont knowWhat causes the hot molten material in convection currents to rise?

differences in densitydifferences in compositiondifferences in gravityI dont knowWhere would you expect to find new crust being created?

convergent boundarydivergent boundarytransform boundaryI dont knowFlight cancellations, caused by volcanic ash from Iceland, are a result of which boundary type?

convergentdivergenttransformI dont knowWhat causes the hot molten material in convection currents to rise?

differences in densitydifferences in compositiondifferences in gravityI dont knowVolcanoes that make up the Ring of Fire are formed by;

divergent boundarieshot spotssubduction zones I dont knowWhat type of volcano is produced by alternating eruptions of cinder and lava;

shieldcindercompositeI dont knowThe Hawaiian Islands are an example of what type of volcano?

shieldcindercompositeI dont know