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Earthquakes happen before valcanoes erupt because
Earthquakes move nearer to the surface as an eruptionapproaches. And these "microearthquakes" happen more frequently before an eruption, until all the seismometer can register is a distinctive vibration, slight but continuous, known as a harmonic tremor.
The seismic activity associated with volcanism is usually as a result of pressure increases in the magma chamber below the volcano which cause fracturing of the surrounding rock mass
What else can I help you with?
Do earthquakes explode like volcanoes?
No, earthquakes and volcanoes are different geological events. Earthquakes are caused by the movement of tectonic plates beneath the Earth's surface, while volcanoes erupt due to magma or gas buildup beneath the Earth's crust. While both can cause destruction, earthquakes do not explode like volcanoes.
Do seismologists also study volcanoes?
They do occasionally, and they sometimes help vulcanologists. This is because volcanoes generate earthquakes, and analyzing patterns in these earthquakes can help to tell if a volcano is likely to erupt soon.
Did the mt st Helen's eruption affect the land around it?
There is always earthquakes when volcanoes erupt, so, yes.
How can volcanoes errupt under water?
Volcanoes can erupt underwater when magma rises to the surface through a weak spot in the Earth's crust on the ocean floor, known as a mid-ocean ridge or a hotspot. When the magma reaches the cold ocean water, it can cause the water to heat up rapidly, leading to explosive eruptions and the formation of underwater volcanoes.
Where do earthquakes not happen?
Small earthquakes can happen almost anywhere on the earth's surface, however major earthquakes mainly only occur at plate boundaries or along very large faults. Earthquakes can also happen around volcanoes especially when they are due to erupt.
Are earthquakes and volcanoes related?
Earthquakes can cause a volcano to erupt.
What are undersea earthquakes?
Undersea volcanoes that erupt.
What do scientists hope to learn by collecting information about friction along faults?
Predicting when earthquakes will happen and when volcanoes will erupt
How do you know when volcanoes will erupt?
Occurence of tremors, earthquakes, gasseous emission and landslides.
What does movement along plate boundaries cause?
Earthquakes, volcanoes to erupt, mountains, etc...
Do earthquakes explode like volcanoes?
No, earthquakes and volcanoes are different geological events. Earthquakes are caused by the movement of tectonic plates beneath the Earth's surface, while volcanoes erupt due to magma or gas buildup beneath the Earth's crust. While both can cause destruction, earthquakes do not explode like volcanoes.
What happen when a volcano is active?
When a volcano is active it will erupt. These volcanoes might take many years to erupt but will still erupt.
What causes volcanoes to erupt under earths surface?
mostly earthquakes or plate tectonic movement.
Do earthquakes have a vent?
No. Volcanoes have vents. Vents are holes though which ash, gas, and lava can erupt.
Do seismologists also study volcanoes?
They do occasionally, and they sometimes help vulcanologists. This is because volcanoes generate earthquakes, and analyzing patterns in these earthquakes can help to tell if a volcano is likely to erupt soon.
What explains earthquakes and volcanoes erupting?
That's two different questions. Earthquakes don't erupt. Earthquakes happen when underground rock structures break, moving the earth above them. Volcanic eruptions happen with the pressure of the molten rock (magma from inside the Earth) breaks through a rock layer above it.
Do volcanoes still happen now?
Yes. There are hundreds of volcanoes on earth, and in any given year, about 50 will erupt.
