Earth Science: Lecture 9 - Earthquakes

[tristancolson]

Thank you a lot. This is the reason I got an A on my exam

[MNSnowbot]

I really like your videos, is there a textbook you would recommend for Geology?

[ZVIKAGREENBERG]

When you talked about the Seismograph - you said that the P-Wave is slower while you wrote it is faster. When you talked about Tsunami speed of 500 MPH you have to say that the speed depends in the depth of wave. The speed of wave coming to shore or top water layer is zero.

[rddimensionmedia]

I beleive the reason pangea separated is not because of plates shifting and i beleive the spaces which are now bodies of water the Ocean and lakes are from erosion. I beleive this would change the reasons for Earthquakes i beleive they maybe collapses from a weakening of the Earth from other factors there would now be a force on the Continents because of the gaps created by the land masses caving into the Ocean and the currents push the force of the water on the continents. I beleive the buildings that we invented also affects the land masses as the Earth needs Vitamin D or elements from the suns rays to maintain. The size and amount of the buildings increased covering more land masses adding the weight of the building plus gravity at multiple points on the building does gravity affect each individual human? Yes so it affects the Earth at Each point on the Globe but maybe at a certain size per affected region. I beleive we also have been mining too much and taking too much from the Earth also weaking the stability and affecting its ability to heal itself!

[zelarommoralez]

I heard the causes of earthquakes are electromagnetism and the ionosphere.