If teams have financial difficulties they must submit an application to the Organizing Committee reporting their financial difficulties. Committee will review the statement and if decides that the team has a legitimate reason, will be looking for sponsors for the team.
President of International Young Naturalists' Tournament (IYNT)
Director of Accelerator Physics Center
Fermi National Accelerator Laboratory (Fermilab)
Batavia, IL USA
Fellow of American Physical Society
President of Russian-American Scientists Association
My dear friends - participants of the International Young Naturalists’ Tournament,
I would like to greet you at this intellectual competition that involves all those interested in Nature and in Physics in all its diversity! This tournament will give you the opportunity to learn a lot about the world, will teach you to think about the solution of the problems you face, and you will try yourself in the studies of natural phenomena.
Tournament is a competition, and, as in any competition, there will be winners. But the IYNT is special in that regard, as there will be no losers, because the experience of the research work and the knowledge that you acquire will be all yours – it will be the experience that you take into the future and something that never gets lost.
It is so pleasing to see your passion for physics and your desire to cooperate on research with other young people. I am sure that the IYNT will provide you unique opportunity to build international friendships that will last a lifetime.
Tournament will teach you a lot - to think logically, to articulate coherently and express your thoughts to other participants of the tournament, to defend your point of view, to carry out a reasoned debate and to learn to understand each other.
I wish all of you good luck, as well as new knowledge, new ideas and new friends!
INTERNATIONAL YOUNG NATURALISTS' TOURNAMENT
is a competition among teams of school students (aged 12 to 16) in their ability to solve complicated problems of natural science and to defend these solutions in public debates.
The Tournament will be presented in February 2013 on the site http://www.iynt2013.com and in Russian journal “Potential”.
Participants of the Tournament are teams of school students all over the world.
Problems of the Tournament are challenges of natural science and maths and will be published at http://www.iynt2013.com
Planned dates for the Tournament: 29 April to 6 May 2013.
The registration of participants of the Tournament will be open from 5 February 2013.
Why Eskişehir has been chosen as the host of IYNT 2013?
In Turkey there are plenty of beautiful places and cities like İstanbul, İzmir, Bodrum, Antalya, Eskişehir, Marmaris etc, which could be hosts of the IYNT 2013. However in choosing the host city we took into account the fact that Eskişehir was appointed as the Cultural Capital City of the Turkish World for 2013 and it's a perfect idea to show the culture of Eskişehir and Turkey not only for the Turkish World but as well to our young participants of the IYNT. It is extremely important to bring together the young people from different cultures in our globalized world. That's why we choose Eskişehir to be the host of the IYNT 2013.
Problem set for the home stage of the IYNT 2013
1. Invent Yourself
Suggest your own research problem for the Tournament and solve it.
2. The Bulb in the Glass
There is a popular way to force onions in а glass, ﬁlled with water (see ﬁgure). The bulb gives roots and leaves, and at the same time the volume of water in the glass decreases. What factors can inﬂuence the speed of water uptake? Test your hypothesis by experiment.
3. Magnetic Arrows
Place two suspended magnetic arrows close to each other. After a short time they will reach the equilibrium where the opposite poles are aligned together. Deﬂect one of the arrows by some small angle and release it. Both arrows will start oscillations. Investigate and explain the character of the coupled oscillations of the magnetic arrows.
4. Fresh and Salted Water
Electroconductivity of natural water depends on concentration of dissolved salts. The table below shows the conductivity of water samples taken from different natural sources.
1) Match the sample source with its conductivity
2) What might be the source of water with 13.2 µS/сm conductivity?
3) At the tournament you will be provided by a sample of water. Measure the electroconductivity of the new sample. Decide whether it is distilled water, tap water or mineral water. Please, bring with you the equipment for the electroconductivity measurement.
Baltic Sea at Neva estuary
Moscow-river, upstream of Moscow City (in winter)
Peat bog lake
Moscow-river, downstream of Moscow City (in winter)
Possible values of the electroconductivity, µS/сm: 10; 125; 420; 580; 4580; 45600; 228000.
5. A Compass and a Ruler
Two schoolboys – Alex and Boris – got a task to make a given segment (initial length L) n times longer. Alex is allowed to use a compass and a ruler. Boris is allowed to use a compass only while he is asked to plot only the end points of the ﬁnal segment. Suggest some way (or a few ways) of solving the problem for both schoolboys. Choose a solution Alex might use and let A(n) be a total number of lines drawn by the compass and the ruler in the solution for a segment of nL length. Choose a solution Boris might use and let B(n) be a total number of lines made by the compass for the points at nL length. Find A(2), A(3), …, A(10) and make a bar diagram 1. Find B(2), B(3), …, B(10) and make a bar diagram 2. Determine which solution is the best calculating A(n) / B(n) for each case separately. What reasonable assumptions about A(n) and B(n) behavior for all n can you make from the comparison of diagram 1 and diagram 2? For example, what can you tell about A(n) / B(n) behavior when n goes to inﬁnity?
6. Nontypical Crystals
Crystals of substances have usually form typical shapes. For example, the sodium chloride crystals are cubes, and the crystals of alum are octahedrons. Is it possible to grow untypically shaped crystals, for example, cube alum (or as some other shape, but not octahedrons)? Explain your opinion and prove it experimentally. You can use your own examples of crystalline substances.
7. Fastidious Flour Moth
For several weeks Lucy as a tourist was enjoying a nice travel. At that time a ﬂour moth (Anagasta) found a way to some food stocks in her kitchen. Coming back, Lucy found, that moth larvae appeared in porridge oat, in dry ﬁgs and ginger, in shelled sunﬂower seeds and hazelnuts. Flour moth paid less attention to dried plumes. Salt, sugar, roasted coffee grains, beans, cinnamon, cocoa powder, jam and peas remain intact. Explain the preferences of the ﬂour moth. If possible, test in laboratory other 2–3 stocks as food for moth. Avoid the infection of your own food stocks by any moth!
8. A Good Battery
While in class, physics teacher has noticed that the TV remote control is not working properly. He was thinking that its battery has died. At the end of the lesson he suggested that the schoolchildren do a scientiﬁc research to buy the best battery for the remote control device. That is how the competition “Who buys the best battery’’ has started. Carry out a similar research. Based on its results, suggest the best battery you can buy in the store.
9. Plant Fertilizers
You have got sodium hydrophosphate, barium dihydrophosphate, potassium phosphate, potassium dihydrophosphate, potassium nitrate, sodium chloride, copper(II) chloride, cobalt(II) nitrate, zink sulfate, aluminium sulfate. What substances could possibly be used to prepare soluble fertilizers for desert cacti (fam. Cactaceae) and moisture-loving spiderworts (Tradescantia)? What precautions should be taken not to cause harm to the plants?
10. The Land lease Contract
The chief of the tribe Chingachgook is settling a bargain with a cowboy Joe. The chief is about to turn over some of the Indian land to the cowboy, but only the land which Joe will be able to fence around with the help of four stakes and the same number of ropes tighten between each pair of stakes. The chief also has put forward the demand according to which the lengths of the ropes are to come to the quantities of
(1 - 7t), (14t + 5), (7 - 6t) and (5 - 3t) where t is a certain number.
What is the value of t at which Joe will be able to fence the largest area and what is the size of that area?
11. Flowering Chrysanthemums
Chrysanthemum indicum is a well-known autumn-ﬂowering ornamental plant from India. Indira from Delhi sent a new large-ﬂowered variety of chrysanthemum to her friends. Fatma planted those chrysanthemums in Istanbul, where they gave ﬂowers on October 1st. Helen lives in Moscow, and Mary lives in Sydney (Australia). But their plants produced ﬂowers at another date, rather than in Istanbul. Explain this phenomenon and calculate when Indira, Helen and Mary will see the ﬂowering chrysanthemums, planted by themselves.
12. A Fireproof Handkerchief
This problem was suggested by the team of Moscow Suvorov Military School in the home stage of YNT-2012 and received the highest score from the Jury. Please watch the video (see link below). Carry out the similar experiments on your own and explain the results. Make sure you follow the ﬁre safety rules during the experiments! The presence of your teacher is required!
Video to 12 task http://www.youtube.com/watch?v=nSY41PReny8&feature=youtu.be
The problems are prepared by
V. V. Vavilov, D. M. Zhilin, N. I. Morozova, V. V. Choob, and E. N. Yunosov.
Edited by V. V. Choob.