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For the distribution of water, I have seen lots of conflicting information from different sources. For example, here are two diagrams:





The first diagram uses percents of percents when it gets into the smaller amounts. The second one uses total percents, even for the smaller amounts.

I tried to calculate the amounts from the first diagram to match the second diagram, but the numbers didn't match. Take groundwater for example:
Diagram 1: 30.06% of 2.5% -----> 30.06%*.025 -----> .7515%
Diagram 2: .63%
It's a small difference, but still...

I'm leaning towards the first one being more accurate/better for cheat sheet. Opinions?

in my experience at state and regional competitions, they only ask relative questions about that kind of stuff. for example, they would ask "where is most of earth's fresh water located?" instead of asking exactly how much water is contained in glaciers and ice. so i'm sure either one is fine, just as long as it gives you a general idea of where the water is. if you want exact statistics though you can use these. I got them from a link on the soinc website.

Where’s the water?
%
Oceans 97.61
Polar ice/glaciers 2.08
Ground water 0.295
FW Lakes 0.009
Rivers 0.0009
Saline Lakes 0.008
Soil/Subsoil Moisture 0.005
Atmospheric Vapor 0.0009

hexagonaria wrote:in my experience at state and regional competitions, they only ask relative questions about that kind of stuff. for example, they would ask "where is most of earth's fresh water located?" instead of asking exactly how much water is contained in glaciers and ice. so i'm sure either one is fine, just as long as it gives you a general idea of where the water is. if you want exact statistics though you can use these. I got them from a link on the soinc website.

Where’s the water?
%
Oceans 97.61
Polar ice/glaciers 2.08
Ground water 0.295
FW Lakes 0.009
Rivers 0.0009
Saline Lakes 0.008
Soil/Subsoil Moisture 0.005
Atmospheric Vapor 0.0009

Thanks for the statistics ^_^ I will use those and the first diagram. Just in case.

I just started this event (I got assigned) and I've never tried this event before.
Would you recommend any books or websites or etc? Thanks

Start with the wiki. It's a good start, better than some events. After that, make sure you study everything listed under section 3 in the rules. Wikipedia is a good resource, but the USGS, EPA, and Groundwater Foundation sites will help, too.

If you can get it, the training handout is really useful, and make sure to use cheatsheet space wisely, because every inch counts in this event.

What textbooks are yall using? I am currently using Geology by Leon Long, (purchased from a used book store) which has an ok section on depositional systems (rivers) and groundwater. Unfortunately, as many other people have apperently found with their books, I have also found that there is not a very good description of lakes.

I know that this question has been asked before, but could somebody who knows about it answer?

Thanks a lot!

liutony66 wrote:What textbooks are yall using? I am currently using Geology by Leon Long, (purchased from a used book store) which has an ok section on depositional systems (rivers) and groundwater. Unfortunately, as many other people have apperently found with their books, I have also found that there is not a very good description of lakes.

I know that this question has been asked before, but could somebody who knows about it answer?

Thanks a lot!

I'm not using a textbook. All the one's I've seen go over Dynamic Planet stuff in a small fraction of the whole book. There are many helpful websites, like this one, this one, and this one. Although a textbook is a good resource, based on the one's I've seen, you can get everything online.

If anyone's actually got a really great textbook, could they post it? That would be nice.

Just got done with DP in the NJ regionals. It was a lot different from past years (e. g. this year it was stations), does anyone know if it will be the same in states, or will it change.

Nan0 wrote:Just got done with DP in the NJ regionals. It was a lot different from past years (e. g. this year it was stations), does anyone know if it will be the same in states, or will it change.

Only the event supervisor for DP at NJ states can answer that question. However, the test should be about the same material covered last year (Fresh Waters).

EDIT: basically, it will still be about freshwater, but the way it is presented (test, station, etc.) and the exact questions could change.