31 Answered Questions for the topic Geophysics

03/27/19

Why is continental crust less dense than oceanic?
Why is it that continental crust is less dense than oceanic, where in fact continental crust is thicker than oceanic crust?
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03/19/19

Magma resultant from group 1 and group 2 elements?
I was recently speaking with a geology professor over lunch at a university who has a theory that I've never heard before. His postulation was quite compelling and I was hoping to do a little... more
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Geophysics Geology Earthquakes

03/19/19

Why are there more intense earthquakes in Iran than in Iraq?
Why are there more intense earthquakes in Iran than in Iraq, if they are so close together?I often hear news items of earthquakes in Iran that are higher on the Richter Scale than those that happen... more
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03/18/19

Simulating the earths crust?
I would like to create a computer simulation which would fold two plane-ish surfaces into two crumpled-ish surfaces. This in order to simulate the earths crust movement and collisions resulting in... more
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03/18/19

How do seismologists locate the epicenter and focus of an earthquake?
I know the focus of an earthquake is where the earthquake originated from, but what I could never figure out is, how to scientists find out where exactly the focus (and epicenter) are located?
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03/14/19

How is the mass of the Earth determined?
According to textbook knowledge, the mass of the Earth is about $6 × 10^{24}\\,\\mathrm{kg}$. How is this number determined when one cannot just weight the Earth using regular scales?
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