Page 1 of 10

Dynamic Planet B/C

Posted: August 31st, 2017, 12:20 pm
by bernard

Re: Dynamic Planet B/C

Posted: September 8th, 2017, 8:58 pm
by connerywood18
As a student, I'm mildly concerned about the rule change for how calculators must be "dedicated to computation" in the event.
Maybe I'm just slow on the news, but any ideas/knowledge as to how/why that wording is in the rules?
Thanks!

Re: Dynamic Planet B/C

Posted: September 10th, 2017, 10:44 am
by OrigamiPlanet
connerywood18 wrote:As a student, I'm mildly concerned about the rule change for how calculators must be "dedicated to computation" in the event.
Maybe I'm just slow on the news, but any ideas/knowledge as to how/why that wording is in the rules?
Thanks!


From what I saw, "dedication to computation" just means that the sole purpose of the calculator is to calculate. It's basically excluding things like phones, as they are not just for computing mathematical problems. So like a TI Calculator would fit under those guidelines.

Re: Dynamic Planet B/C

Posted: September 10th, 2017, 10:56 am
by Skink
Looking at the last National test, there's some...obscure material on there, certainly not stuff covered in the generally recommended resources (or clearly outlined subtopics in the rules, yikes). Does anybody know about gravity anomalies, the magnetism stuff tested, and anything else I'm forgetting? I only gave it a quick look.

Re: Dynamic Planet B/C

Posted: September 10th, 2017, 11:33 am
by Unome
Skink wrote:Looking at the last National test, there's some...obscure material on there, certainly not stuff covered in the generally recommended resources (or clearly outlined subtopics in the rules, yikes). Does anybody know about gravity anomalies, the magnetism stuff tested, and anything else I'm forgetting? I only gave it a quick look.

I learned a lot about gravity anomalies in the weeks before Nationals specifically in anticipation of it and other geophysics-type stuff showing up heavily, since I'd already heard from someone who posted on here that Enrica Quartini was going to be the ES (confirmed on Monday before the tournament when the list came out). I have no idea if I got the gravity anomaly questions correct, but I'm inclined to think I got at least some points since we finished 3rd. Unfortunately I learned next to nothing about magnetism, so we skipped most of that on the test (including the cross-section).

Re: Dynamic Planet B/C

Posted: September 10th, 2017, 1:52 pm
by OrigamiPlanet
Skink wrote:Looking at the last National test, there's some...obscure material on there, certainly not stuff covered in the generally recommended resources (or clearly outlined subtopics in the rules, yikes). Does anybody know about gravity anomalies, the magnetism stuff tested, and anything else I'm forgetting? I only gave it a quick look.

I'll try to keep this as simple as possible, though I was never at the 2017 national tournament. An anomaly is simply anything that is off/unusual. So a gravity anomaly are parts of Earth that have unusual fields of gravity, when being compared to a featureless, flat Earth. Areas like mountain ranges cause the gravitational force to be more than what it would be on this made-up, featureless Earth. You'll want to look at maps about gravitational anomalies for more information. As for magnetism, I don't think I can help you there, as I have previously stated, I did not participate in the national tournament.

Re: Dynamic Planet B/C

Posted: October 17th, 2017, 3:29 pm
by RainbowMammoths
Do any of you know what is usually done at the timed stations for this event? Also, what does the Dynamic Planet wiki mean when it says: "as was the idea that America's movement came from the gravitational forces of the sun and the moon"?

Re: Dynamic Planet B/C

Posted: October 17th, 2017, 3:48 pm
by Unome
RainbowMammoths wrote:Do any of you know what is usually done at the timed stations for this event?

While this event is rarely station-based despite substantial effort by the National Committee, if it is, the stations tend to be more application-based (though, not always, and written tests can certainly be heavily application-based).

Re: Dynamic Planet B/C

Posted: October 17th, 2017, 5:16 pm
by ScottMaurer19
Check out the FAQs on calculators... It would appear that graphing calculators are permitted. "With these calculators their functionality is limited to mathematical calculations or associated activities such as running simple computational programs or producing graphs."

Re: Dynamic Planet B/C

Posted: October 18th, 2017, 2:42 pm
by RainbowMammoths
Unome wrote:
RainbowMammoths wrote:Do any of you know what is usually done at the timed stations for this event?

While this event is rarely station-based despite substantial effort by the National Committee, if it is, the stations tend to be more application-based (though, not always, and written tests can certainly be heavily application-based).
Thanks!

Re: Dynamic Planet B/C

Posted: October 21st, 2017, 10:54 am
by y1008083
Do anyone of you know how to calculate for isostasy and links for isostacy? Thanks!

Re: Dynamic Planet B/C

Posted: October 23rd, 2017, 1:21 pm
by OrigamiPlanet
y1008083 wrote:Do anyone of you know how to calculate for isostasy and links for isostacy? Thanks!


Calculating isostasy is really difficult. I can post you a link to it, but it seems awfully complicated... There's two forms of isostasy, so you might want to investigate that.

http://web.ics.purdue.edu/~ecalais/teaching/eas450/Gravity5.pdf

Re: Dynamic Planet B/C

Posted: October 27th, 2017, 1:48 pm
by OrigamiPlanet
By chance, does anyone know a decent textbook to get for dynamic planet? I've looked at some, but they seem pricey and I want to know if there's a cheaper, but still efficient alternative.

Re: Dynamic Planet B/C

Posted: October 28th, 2017, 11:05 am
by knottingpurple
y1008083 wrote:Do anyone of you know how to calculate for isostasy and links for isostacy? Thanks!


Based on the types of (Airy) isostasy problems I'd seen on previous tests, I wrote a bunch of practice problems for a camp over the summer which you can find at https://docs.google.com/document/d/1m_3e0b-TN0uLNbsic6nDm_ROiPSnsogwkwCbigWo90c/edit?usp=sharing if they make any sense?

Also, https://docs.google.com/presentation/d/1daF9hs9J-g9n-zN6sHc2-A9WntDFAtAOccR02rftIfQ/edit?usp=sharing were the slides I used to teach the topic initially, but I guess it's not as useful without somebody explaining what the slides mean... and even with explanations a lot of people struggled with it, so it's a hard topic, it's reasonable if you can't understand it initially.

Re: Dynamic Planet B/C

Posted: November 5th, 2017, 9:47 pm
by fffurious
What's a good way to format your notes for this event? I've only ever happened to do events with 1-page note sheets, and I'm wondering what the best way to organize notes for this is.