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.
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.
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.
I did some research, and I haven't found anything about using the Pythagorean Theorem to find the epicenter. I've seen a few presentations about how to use the Pythagorean Theorem to determine the amplitude.
Melinda TheUnicorn I read through it, and it seems like they are talking about triangulation (just using the distance from three set points). They don't really go into how it relates to the Pythagorean Theorem. I'm sure there's a way that this is done if all the points are on a plotted grid (maybe Lat/Long coordinates). Seismologists wouldn't be using a compass and a paper map any more, it's all done by computers. Maybe the Pythagorean Theorem is used in the programming in lieu of the compasses. Hope that helps.
Patrick Baldwin I thought you could draw straight lines from the 3 points to create a triangle but, wouldn't you have to use the circle method (not sure what is called) to find epicenter first? Leaving the P.T. pointless?
If you watch the video around 4:15, it shows you how you can take the distance you calculated from the S & P wave graph and translate that to a distance on the map (using your compass). Hope that helps.
So, you're definitely not going to like my answer. If you draw the other two circles, then you should be able to tell near which city the epicenter is. Sorry, can't just give away the answers!!! Let me know if you need any help.
Qui, we aren't really given that data in this activity. We are just given the P and S wave arrival times. If this were closer towards reality, we would be given the P and S wave arrivals just as times on a clock. This is a little more of a simplified version.
Thank you...I have been looking for a better and more accurate way to explain this to my students before I turn them loose on their main Earthquake lab in class.
After losing so much time over this kind of exercises, I managed to do it in 10 min after watching your video. Thank you
I have my earth science regents practical on Tuesday and I just want to thank you for this knowledge you've blessed upon me.
Thank you so much, Patrick. You do an amazing explanation for finding epicenters. My confidence for the Regents Lab is boosted thanks to you.
god bless your soul i would've failed again
only 10 minutes and now figuring out the epicenter of an earthquake is outrageously easy to do
No worries! I'm glad it helped!
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.
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.
Patrick, I really like your voice, I'm not trying to sound creepy
where is the answer key of this activity?
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.
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.
Then how did you get 2:15
fulaqueen 0.25 of a minute is equal to 15 seconds (or 0:15 minutes)
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?
I did some research, and I haven't found anything about using the Pythagorean Theorem to find the epicenter. I've seen a few presentations about how to use the Pythagorean Theorem to determine the amplitude.
Melinda TheUnicorn I read through it, and it seems like they are talking about triangulation (just using the distance from three set points). They don't really go into how it relates to the Pythagorean Theorem. I'm sure there's a way that this is done if all the points are on a plotted grid (maybe Lat/Long coordinates). Seismologists wouldn't be using a compass and a paper map any more, it's all done by computers. Maybe the Pythagorean Theorem is used in the programming in lieu of the compasses. Hope that helps.
Patrick Baldwin I thought you could draw straight lines from the 3 points to create a triangle but, wouldn't you have to use the circle method (not sure what is called) to find epicenter first? Leaving the P.T. pointless?
Hey guys, I just fixed the second earthquake so that it actually works. Work through it and see how it goes. Happy New Year!
Work through it and see how it goes. I got your back Pat!
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
i have a question Mr. Baldwin, at 6:16 isnt it supposed to be 64?
Cactus, you are right, that I goofed it up. It should actually be 164 seconds. Thanks for the edits!
Welcome
What does it mean if the circles don't line up not including personal error
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?
This was so helpfull I have regents tomorrow so thank you very much it helped me out a lot
*Patrick Baldwin
can I ask where could I get a copy of the "scale of kilometers" ?? the one with each box is 100km
I just made one based on the scale of the map. Feel free to make a copy of the doc (link found in video description).
+Patrick Baldwin oh okay …thank you so much
Hi, Patrick
What equipment did you use to record this lesson? Thanks.
+aimei aimei Just an iPhone on a tripod.
Regarding the the table, what if a straight line is given instead of the P and S line?
Thanks for this. I teach 6th grade science and have stolen it! Had an older version of this and this is way better.
Thanks a ton!
I'm glad that you understand it now!
With the compass though, how do you know how big your circle is with the pencil?
If you watch the video around 4:15, it shows you how you can take the distance you calculated from the S & P wave graph and translate that to a distance on the map (using your compass). Hope that helps.
can you tell me where the epicentre actually was? like the actual city. you only did two of the four circles and said its either kansas city or utah
So, you're definitely not going to like my answer. If you draw the other two circles, then you should be able to tell near which city the epicenter is. Sorry, can't just give away the answers!!! Let me know if you need any help.
Thank. you so. much. You have know idea how much this helped me.
but how do you find the P wave travel time, and the origin time?
Qui, we aren't really given that data in this activity. We are just given the P and S wave arrival times. If this were closer towards reality, we would be given the P and S wave arrivals just as times on a clock. This is a little more of a simplified version.
10/10 this was gr8 m8.
Thank you...I have been looking for a better and more accurate way to explain this to my students before I turn them loose on their main Earthquake lab in class.
Can you show how to find the origin time of p waves?
Said Sujaa at 0:43 into the video, you can see the P wave arrival. It is just the first disturbance on the seismogram.
how do you detemine the epicenter of the earthquake using pythogorean theorem
Ananya Iyer ... no clue
I don't get how u convert 135 sec to minutes?
Thanks for the activity.
Anyone know the time we have to complete each station
Nocturnal Siren there's not enough info given to answer ur question unless I'm mistaking it. sry m8
Thank you
thank you it really helped
Thank you thank you thank you!!!
thanks for the help I got a hundred on my mid test and I can chill with my girlfriend (Translate)
so helpful
gracias por la ayuda que recibió de un centenar en mi mediados de pruebas y puedo descansar con mi novia(