This is what magma is called once it's outside of the volcano.
What is lava?
100
This is the name of a volcano that hugely exploded in Washington in 1980.
What is Mount Saint Helens?
100
This is the term that means lava slides down the side of the volcano.
What is lava flow?
100
TRUE or FALSE: Volcanoes can form at divergent plate boundaries.
TRUE.
100
This is the cycle that takes 200 millions years to complete in the magma of the asthenosphere where hot magma rises and cold magma sinks.
What is a convection cycle?
200
This is the name for the place under the volcano where magma stays until pressure builds enough for it to come out in an eruption.
What is the magma chamber?
200
This type of volcano is non-explosive and layers of lava flow harden on it and add layers to it over time.
What is a shield volcano?
200
This is the name for all of the "stuff" (molten rock, ash, rocks from the mountain) that explodes out of the top of a volcano.
What is pyroclastic material?
200
This is the type of boundary pushes two plates together and oftentimes forms composite volcanoes.
What is a convergent plate boundary?
200
This is the layer in which convection cycles with magma happen and it's right below the lithosphere (where the tectonic plates are).
What is the asthenosphere?
300
This is something that makes magma more thick and goopy.
What is silica?
300
This is the type of volcano that only has explosive eruptions with pyroclastic material.
What is a cinder cone volcano?
300
Hawaii is an example of this...
What is a hot spot?
300
This is the phenomenon of magma repeatedly coming out onto the Earth's crust as a plate slowly moves above it.
What is a hot spot?
300
This is the thing that builds up in the magma chamber and causes a volcano to explode.
What is pressure?
400
This is the type of magma that is known for being more chemically reactive.
What is magma with more water in it?
400
This is the type of volcano that has both explosive eruptions and non-explosive eruptions.
What is a composite volcano or a stratovolocano?
400
This is the name for something that forms when the magma chamber empties out and the weight of the volcano causes it to sink/collapse into the empty space.
What is a caldera?
400
This is the type of plate boundary that forms mid-ocean ridges at the bottom of the ocean.
What is a divergent plate boundary?
400
This is the thing that ultimately causes tectonic plates to move.
What are convection cycles in the asthenosphere?
500
This is the type of magma that is often part of non-explosive eruptions.
What is magma with a lot of basalt in it?
500
This is the type of volcano that is very common on the ocean floor.
What is a shield volcano?
500
This is the word that means water rises to the surface when loose, saturated soil is shaken. (This is from the earthquake unit.)
What is liquifaction?
500
This is name of the mechanical layer of the Earth that contains both the tectonic plates and the Earth's crust.
What is the lithosphere?
500
This is a gas that is common in volcano eruptions (and in soda eruptions for that matter).