Types of Volcanoes
A volcano that can also be called a stratovolcano.
what is a composite volcano?
This area that makes a ring around the Pacific ocean is a well know volcanic region.
What is the Pacific Ring of Fire?
Made from basalt and dark in color, this type of magma has a low viscosity due to it's high temperature.
What is Mafic Magma?
This material is less than 2mm in diameter and can be extremely hot as it gets ejected into the atmosphere. also the substance left in your fire pit.
What is Ash?
Shield volcanoes often will have this type of eruption. I just wish students would do this too.
What are Quiet Eruptions?
This volcano gets it's name from the tiny rocks and ash that build it into a cone.
What is a Cinder cone volcano?
In addition to temperature, this factor causes magma to rise to the surface resulting in volcanoes.
What is density?
This type of Lava breaks into large chunks and is the most viscous of all the lava due to it's high silica content and lower temperatures.
What is Blocky Lava?
This particle is the smallest at a less than .25mm diameter. You'll need more than "Swiffer" to get rid of this.
What is Volcanic Dust?
Cinder cone and stratovolcanoes both have this type of eruption. Mt. St. Helen's is a perfect example.
what are Explosive eruptions?
The broad volcanic feature formed by quiet eruptions of thin lava flows.
What is a Shield Volcano?
This feature forms when a string of volcanoes that forms along a trench at convergent plate boundaries.
What is an Island Arc?
This type of lava literally means "ropy" in Hawaiian.
What is Pahoehoe?
LARGE CLOTS OF LAVA THAT MAY BE THROWN OUT OF AN ERUPTING VOLCANO WHILE RED-HOT. Hopefully they don't blow up!
what are Volcanic Bombs?
Explosive eruptions can cause one of these to form at the top of a volcano. The ones on the moon form in a different way.
What is a crater?
The Shield volcanoes of Hawaii were formed by what volcanic feature?
What is a Hot Spot?
The largest amount of magma rises to this surface at this type of plate boundary, like a mid-ocean ridge.
What is a divergent boundary?
This type of Magma has a high viscosity and is known to produce AA and Blocky Lava.
What is Felsic Magma?
This is the LARGEST PYROCLASTIC MATERIAL. SOLID ROCK BLASTED FROM VENT. CAN BE THE SIZE OF A SMALL HOUSE.
What is Volcanic Block?
Changes in earthquake activity and bulges in the side of volcanoes can be signs that help scientists do this.
What is predict eruptions?
This Largest volcano, (like Mt. St. Helens) can have both explosive and quiet eruptions.
What is a composite or stratovolcano?
Many volcanoes form at this area of a plate boundary where one plate slides underneath the other.
What is a subduction zone?
Magma that erupts under water often forms these rounded formations. I hope that helps you sleep at night.
What is Pillow Lava?
"little stones" THAT ARE < 64 MM IN DIAMETER.
what is Lipilli?
Mafic lava that gets ejected during an eruption will create lava flows on the side of a volcano because it has a lower one of these than Felsic lava. That's why it's runnier than a student's nose.
What is viscosity?