Dynamic Planet B/C Question Marathon

Test your knowledge of various Science Olympiad events
nomynameisnotkevin
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Re: Dynamic Planet B/C Question Marathon

Postby nomynameisnotkevin » Sun Dec 29, 2013 7:53 pm

Ok, I was thinking of a different question with the multiple answers, but on tests I've seen it as 65 m, so 70 isn't far off. Your turn!

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Re: Dynamic Planet B/C Question Marathon

Postby Crazy Puny Man » Tue Dec 31, 2013 7:38 am

Okay!

Describe a roche moutonnee. Be sure to distinguish between the characteristics of the lee and stoss sides of one, and describe what its orientation indicates about the direction of glacier flow

A diagram will help your answer :P

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Re: Dynamic Planet B/C Question Marathon

Postby rtunnel97 » Thu Jan 09, 2014 1:22 am

a roche moutonnee is sometimes referred to as a sheep back mountain. a rock hill is shaped by the passage of a glacier up the smooth gradual side and down the steep, rough, plucked and cliff girt side. the upstream surface is often marked with striations. the abrasion on the stoss side and plucking on the lee side produces an asymmetrical erosional form. the steep side is not facing the approaching glacier, basically the opposite of a drumlin.
here is a diagram: http://classconnection.s3.amazonaws.com ... 503373.jpg
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Re: Dynamic Planet B/C Question Marathon

Postby ceg7654 » Fri Jan 10, 2014 1:03 am

What do you guys mean by butterfly? "Aw butterfly"? "He owns everyone's butterfly"?
I'm a SciOly newbie, is that like slang for something? It sounds kinda funny.
Can anyone explain to me this meaning and how it got started?
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Re: Dynamic Planet B/C Question Marathon

Postby Crazy Puny Man » Fri Jan 10, 2014 1:44 am

rtunnel97 wrote:a roche moutonnee is sometimes referred to as a sheep back mountain. a rock hill is shaped by the passage of a glacier up the smooth gradual side and down the steep, rough, plucked and cliff girt side. the upstream surface is often marked with striations. the abrasion on the stoss side and plucking on the lee side produces an asymmetrical erosional form. the steep side is not facing the approaching glacier, basically the opposite of a drumlin.
here is a diagram: http://classconnection.s3.amazonaws.com ... 503373.jpg


Good answer! Your turn

ceg7654 wrote:What do you guys mean by butterfly? "Aw butterfly"? "He owns everyone's butterfly"?
I'm a SciOly newbie, is that like slang for something? It sounds kinda funny.
Can anyone explain to me this meaning and how it got started?


Um butterfly is just what all the cuss words get filtered to. Anything with a cuss word in it automatically gets filtered to "butterfly"

So if I drop the f-bomb right now butterfly it appears as "butterfly"

I just cuss a lot :P

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Re: Dynamic Planet B/C Question Marathon

Postby rtunnel97 » Fri Jan 10, 2014 2:24 am

easy one, whats a tarn?
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Re: Dynamic Planet B/C Question Marathon

Postby nomynameisnotkevin » Sat Jan 11, 2014 11:30 pm

A tarn is a type of lake formed when in a cirque basin carved out by a glacier.

What is the minimum thickness for ice to flow?

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Re: Dynamic Planet B/C Question Marathon

Postby Crazy Puny Man » Sun Jan 12, 2014 3:38 am

nomynameisnotkevin wrote:A tarn is a type of lake formed when in a cirque basin carved out by a glacier.

What is the minimum thickness for ice to flow?


I think the answer to this question at Palatine was 30 m, yes? That one was weird - you got 2 pts if you chose 30 m, 1 pt if you chose 50. The more common answer I've seen is 40 or 50 m

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Re: Dynamic Planet B/C Question Marathon

Postby 4n6-Chick-1995 » Tue Jan 14, 2014 3:05 am

In the few textbook chapters on glaciers I've read, I've consistently seen 50m.

I also have a question if anybody can help me out; I'm looking for practice problems on glacial mass balance and chart interpretation-- never figured out how to do that last year but now I need to learn, it's killing my scores. For example, if given a table of data titled simply "Glacial Mass Balance, years, glaciers, no units, and a list of positive and negative numbers.... Blah. Are the numbers +/- from each previous year?? As in, if 1995 is -0.07 and 1996 is -0.01, is the total cummulative loss in mass balance -0.08, or -0.01 from the total throughout that year? (if that makes sense...)I'm assuming here that (-) refers to a loss in glacial mass balance (so ablation>accumulation) but I also want to be sure about that.

If anybody could help me out in this department, I'd appreciate it, thanks. :)

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Re: Dynamic Planet B/C Question Marathon

Postby nomynameisnotkevin » Sat Jan 18, 2014 2:53 am

4n6-Chick-1995 wrote:In the few textbook chapters on glaciers I've read, I've consistently seen 50m.

I also have a question if anybody can help me out; I'm looking for practice problems on glacial mass balance and chart interpretation-- never figured out how to do that last year but now I need to learn, it's killing my scores. For example, if given a table of data titled simply "Glacial Mass Balance, years, glaciers, no units, and a list of positive and negative numbers.... Blah. Are the numbers +/- from each previous year?? As in, if 1995 is -0.07 and 1996 is -0.01, is the total cummulative loss in mass balance -0.08, or -0.01 from the total throughout that year? (if that makes sense...)I'm assuming here that (-) refers to a loss in glacial mass balance (so ablation>accumulation) but I also want to be sure about that.

If anybody could help me out in this department, I'd appreciate it, thanks. :)


I believe what you're talking about is the ablation/accumulation of glaciers. If they have various #'s, and if they give them as positive or negative, then that means that you're either gaining mass or losing it by various means, such as wind scour, etc.

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Re: Dynamic Planet B/C Question Marathon

Postby nomynameisnotkevin » Sat Jan 18, 2014 3:13 am

Crazy Puny Man wrote:
nomynameisnotkevin wrote:A tarn is a type of lake formed when in a cirque basin carved out by a glacier.

What is the minimum thickness for ice to flow?


I think the answer to this question at Palatine was 30 m, yes? That one was weird - you got 2 pts if you chose 30 m, 1 pt if you chose 50. The more common answer I've seen is 40 or 50 m


Bingo. I was just wondering if 50 or 30 was more common.

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Re: Dynamic Planet B/C Question Marathon

Postby PacificGoldenPlover » Thu Jan 23, 2014 4:45 pm

Well, considering the zone of plastic flow begins at about 50 m, that would have been my guess.
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Re: Dynamic Planet B/C Question Marathon

Postby Crazy Puny Man » Fri Jan 24, 2014 5:09 am

Oops, my turn isn't it?

What is the difference between a randkluft and a bergschrund?

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Re: Dynamic Planet B/C Question Marathon

Postby scienceandsmiles » Fri Jan 24, 2014 5:50 am

bergschrunds are higher and have two ice walls

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Re: Dynamic Planet B/C Question Marathon

Postby ceg7654 » Mon Jan 27, 2014 1:21 am

I think scienceandsmiles was supposed to ask the next question?
Anyhoo I have one that my partner and I encountered on a practice test: What is basal sliding? When does it occur?
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