Locating the Epicenter of an Earthquake

Students learn how to determine the epicenter of an earthquake using seismographic data.

[zowegiacomo]

After losing so much time over this kind of exercises, I managed to do it in 10 min after watching your video. Thank you

[princesitayrs]

I have my earth science regents practical on Tuesday and I just want to thank you for this knowledge you've blessed upon me.

[alexanderellison]

Thank you so much, Patrick. You do an amazing explanation for finding epicenters. My confidence for the Regents Lab is boosted thanks to you.

[torikane]

god bless your soul i would've failed again

[brandoncorleone]

only 10 minutes and now figuring out the epicenter of an earthquake is outrageously easy to do

[PatrickBaldwin]

So I was made aware that the second part of the lab doesn't quite align. Either the P and S waves are incorrect or the locations of the stations are incorrect. Hope it doesn't totally mess everyone else up.

[hoga]

i have a question Mr. Baldwin, at 6:16 isnt it supposed to be 64?

[PatrickBaldwin]

Hannah bean, if the lines don't match up, especially in an activity like this, there's two things that could have gone wrong. 1) You messed up somewhere along the way. 2) Your teacher messed up while putting this together. In real life, there may be a few stations that don't quite match up with all the other stations. This is why seismologists use dozens of stations to locate the epicenter. Hope that helps. 

[kingsolomon]

where is the answer key of this activity?

[singularity_josh]

you are a saviour. I've spent more time than I should of on one of these packets that my earth science teacher handed out.

[iamhannahmontana]

I heard you could use the Pythagorean Theorem to find the center. Could you make a video using that method, please, or explain how it works?

[hannahgolding]

What does it mean if the circles don't line up not including personal error

[PatrickBaldwin]

Hey guys, I just fixed the second earthquake so that it actually works. Work through it and see how it goes. Happy New Year!

[AesTaetic-mlkf]

*Patrick Baldwin
can I ask where could I get a copy of the "scale of kilometers" ?? the one with each box is 100km

[PatrickBaldwin]

Amina, here's how you do the conversion: We know that in 1 minute, there are 60 seconds. Based on that we divide 135 second by 60 seconds and that should give us 2.25 minutes. 

[alatimu]

Regarding the the table, what if a straight line is given instead of the P and S line?

[n.p.]

Hi, Patrick

What equipment did you use to record this lesson? Thanks.

[matthewroberts]

thanks man i was absolutely lost in class yesterday and i have a huge test today now i know at least what they are talking about

[marielleeliza]

how did you get the exact time of the arrival time? i mean is there any marks to use as a measurer? or you just estimate it?

[PatrickBaldwin]

I'm glad that you understand it now!