Show:
Types of Volcanoes
Volcano Causes
Eruptions
Igneous Stuff
100
What type of volcano has gently sloping sides?
Shield
100
Where do volcanoes occur?
Where plates move apart or together, and hot spots.
100
What two factors determine how violent an eruption will be?
Silica and gasses trapped in the lava.
100
What is the largest intrusive igneous rock formation?
Batholith
200
What type of volcano has alternating layers of lava and tephra?
Composite
200
What is an opening in Earth's surface that forms a mountain when layers of lava and ash build up?
Volcano
200
What is solid material erupted from a volcano called?
Tephra
200
What is the solid igneous core left behind after a volcano erodes called?
Volcanic neck
300
What type of volcano is made entirely of tephra?
Cinder-cone
300
What is the part of a volcano where lava flows out?
Vent
300
What kind of eruption will happen from silica-poor lava.
Violent
300
What forms when the top of a volcano collapses?
Caldera
400
What type of volcano has both quiet and violent eruptions
Composite
400
What is the steep-walled depression around a volcano's vent called?
Crater
400
What type of eruption will happen from silica-rich lava.
Gentle
400
What is solidified magma that is squeezed into horizontal cracks in rock called?
Sill
500
What type of volcano silica-poor lava?
Shield
500
What is the area of the mantle that is hotter than usual?
Hot spot
500
What kind of lava would you find in a shield volcano?
Silica-poor
500
What is solidified magma that is squeezed into vertical cracks in rock called?
Dike