Why R Some Volcanoes More Hazardous Than Others Flashcards
1
Q
Volcano definition
A
A landform that’s typically conical, has a crater and vents through lava, hot gases, steam and rock fragments
2
Q
Composite volcano characteristics
A
Steeper gradient
Conical shape
Less wide
Thick, sticky lava
Lots of ash,dust
Tall
Destructive
3
Q
Shield volcano characteristics
A
Low gradient
Flat
Wider
Thin,runny lava
Gentle slopes
Constructive
4
Q
Hotspots
A
Thinner, weaker areas of earths crust where magma plumes force their way onto surface forming a series of volcanoes
An example of this is Hawaiian islands
5
Q
Lava type at shield volcanoes and hotspots
A
Thin runny lava
Hotter
More mobile
6
Q
Lava type at composite volcanoes
A
Thick sticky lava
Colder
Less mobile
