Volcanic Eruptions
Volcanic Locations
& Forces
Lava & Ash Landforms
Magma Landforms
Vocabulary
100
What causes volcanoes to erupt?
What is pressure and gas build up
100
Name at least two hazards that are caused by volcanoes
What is fire bombs and setting fires
100
What is the steep cone-shaped hill or mountain formed by volcanic lava and ash?
What is cinder-cone volcano
100
What is the name of hardened magma that is in the volcano pipe?
neck
100
volcano
weak spot in crust where magma comes to surface
200
What is the difference between magma and lava?
Magma is in mantle and volcano, lava is when it reaches the surface
200
Can volcanoes lie beneath the sea and can volcanoes erupt under water?
What is yes and yes
200
What is a wide gently sloping mountain formed by volcanic lava and ash?
Shield volcano
200
What is the landform caused by rising magma that is blocked by rock?
What is dome mountain
200
magma
molten material mix from the mantle
300
What are the three stages of volcanoes?
active, dormant, extinct
300
Can volcanoes be present in the solar system on other planets?
Yes - Mars, Venus, Jupiter, Neptune
300
What is a lava plateau?
What is a high level area
300
What is a batholith?
What is large magma body cooled inside the crust
300
Lava
magma that has come to the surface
400
Describe each one of the stages of volcanoes
active alive, dormant sleeping, extinct dead
400
What type of force is a volcano and why?
constructive force because it builds up land
400
What is a caldera?
What is huge hole left by the collapse of a volcanic mountain
400
What is the difference between a volcanic dike and sill?
Dikes go up and down rock layers, sills go across and inbetween
400
Ring of Fire
major volcanic belt that rims the Pacific
500
Explain the causes for both an explosive and quiet eruption
What is explosive is due to thick sticky magma back up, quiet is from thin magma oozing out
500
What two places are where most volcanoes appear?
What is divergent plate boundaries and subduction zones
500
What is distinctive about a composite volcano?
It alternates in layers of ash and lava
500
Why are magma landforms different from those of lava and ash landforms?
What is magma landforms occur because of magma under the surface whereas lava/ash landforms are up on land
500
Active, Dormant & Extinct
active is alive, dormant is sleeping, extinct is dead
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