How are volcanoes and earthquakes related

Hey guys.After my trials and errors i have come up with an interesting topic about how are volcanoes and earthquakes related.

                    How are volcanoes and earthquakes related?

Some, but not all, earthquakes are related to volcanoes. For example, most earthquakes are along the edges of tectonic plates. This is where most volcanoes are too. However, most earthquakes are caused by the interaction of the plates not the movement of magma.

Most earthquakes directly beneath a volcano are caused by the movement of magma. The magma exerts pressure on the rocks until it cracks the rock. Then the magma squirts into the crack and starts building pressure again. Every time the rock cracks it makes a small earthquake. These earthquakes are usually too weak to be felt but can be detected and recorded by sensitive instruments. Once the plumbing system of the volcano is open and magma is flowing through it, constant earthquake waves, called harmonic tremor, are recorded but not felt.Earthquakes and volcanoes are natural phenomena resulting from the plate tectonics. In general, a volcanic eruption is accompanied by earthquakes.

                                 Volcanic eruptions.

Volcanic eruptions are processes that involve extrusion of magma. They usually form mountains or mountain-like landscapes after the ejected materials cool down. They can occur in any part of the Earth's surface, either in land or seas and oceans. Volcanoes are classified into active (eruptive), dormant (presently not active), and extinct (not eruptive) types based on the activeness of a particular volcano. They are further classified into six different types - shield, cinder, submarine, sub glacial, strata volcano, and super volcano, depending upon the mode of ejection and other features.

The close relationship between temblors and volcanic outbursts is evident from the maps depicting the locations prone to both these phenomena. If you compare the maps that illustrate earthquake zones and volcanic zones, you will find them matching each other. This is because the main theory behind both these natural calamities lies in the plate tectonics.

The planet Earth comprises irregular-shaped and varying-sized plates, which constantly move at different speeds. To be precise, the plates drift over the mantle layer of the Earth. Consequently, magma is generated along the plate boundaries.

When the plates collide, move apart, or slide each other, it leads to generation and accumulation of pressure (strain), which when released causes earthquakes. The strongest earthquakes are manifested during the plate collision, while the slowest earthquakes are observed when plates move apart from each other.In addition, both activities occur within a plate, which are referred to as interpolate earthquakes and volcanoes, respectively. It is estimated that about 10 percent of earthquakes are of this type.

 Here i have some diagrams showing on how eruptions occurs and also how an an earthquake behaves.
Tectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movementTectonic Plates. Plate movement


Here i got some links which i used;


The next research is about Earthquakes in california.








Original Post

Hello Wallace, 

Cool research! The relationship between volcanos and the movement of tectonic plates is super interesting but makes sense. If plates move due to the movement of magma beneath them then it only makes sense that the two natural phenomena are related! I didn't know about harmonic tremors and that is super interesting! 

Great research, 


   Hi Wallace

That is actually a very interesting topic even very  knowledgeable one especially for me who like to know about such things you research about. I wish you a very successful research. Here i have some links which am sure will help you in your reseach.                                        earthquakes.../527732002/
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                                                                                                         Thank you!


Great post Wallace! I really like how you identified the 6 different types of volcanoes. It might be interesting for you to do some research on each of these types and them see what they have in common and what makes them different!

For your next round on Earthquakes in California it would be perfect for you to look into the San Andreas fault line. Here are some websites on it:

Hey Wallace,

Interesting topic! I like how you went into depth about both volcanoes and earthquakes. I also found the diagrams to be helpful in understanding. It might be interesting to look into how volcanic eruptions and earthquakes have affected humans in the past, and how they are predicted.

Here are some websites with some good information on both earthquakes and volcanoes: (this one is interesting-looks at how giant earthquakes help predict volcanic eruptions)

Good luck with your research!

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