iGeo 2015, Писмен тест — Задача 11. Section B: Tropical Storms — Question 5
12th International Geography Olympiad — Tver, Russia — 11–17 August 2015 — Written Response Test — Question and Answer Booklet · 11 август 2015 г. · 4 т.
Instructions for Students
- Fill in your name, team and iGeo student number on the front page of this Question and Answer Booklet.
- Fill in your iGeo student number in the boxes on top of the pages in this Booklet.
- This test consists of 6 Sections.
- The maximum total mark is 90. The mark for each question is given in the margin at the beginning of the question.
There is a maximum of 15 marks for each Section. - Answer all questions in the spaces provided in this Booklet.
- Check the backs of pages as questions are printed on both sides of a page.
- There are blank pages which you can use as additional space for your notes. If you use these pages for answers, please label them clearly with the question number.
- Where appropriate, please write sentences or phrases not single words.
- Give only the required number of answers (reasons, examples, etc.). For instance, if the question asks for 2 reasons and you give more than 2, only the first 2 reasons will be marked.
- The Resource Booklet contains Figures referred to in this Booklet.
- You may use a calculator during the test.
- Time: 180 minutes for students not educated in English, 150 minutes for students educated in English.
- Students not educated in English are allowed to use bilingual dictionaries during the test.
Good luck!
Instructions for Markers
- Check if the iGeo student numbers are on each sheet (on odd pages) before dividing up the Test.
- This test consists of 6 Sections.
- One whole Section per marker and double-checker. One Section per marker-pair who also perform double-checking for their Section. Some lengthy (more than 2 pages) Sections may be divided for two marker-pairs. The layout of the Marking Scheme follows this logic as much as possible.
- Check whether the answer continues outside the designated area, on the margins or as clearly marked on blank pages. No credits will be given to answers in the Resource Booklet.
- The maximum total mark is 90. The mark for each question is given in the left margin at the beginning of the question.
There is a maximum of 15 marks for each Section. - Get the hang of the full range of answers by reading through a few papers with your co-marker before you start your marking.
- These answers are not exhaustive. Credit any relevant answer.
- The Test uses two marking systems: point and level marking.
- Half marks can only be given where indicated.
- Mark only the required number of answers (reasons, examples, etc.). For instance, if the question asks for 2 reasons and there is more than 2, only the first 2 reasons should be marked.
- Please develop your own marking/correcting system (using +/-, x/0, √ marks), underlining, comments etc. to ease double-checking and sample marking.
- Put your mark next to the question number in the column on the left – it eases the work of the person who has to put the numbers into MS Excel.
- Please write down any inconsistencies of the Marking Scheme and additional answers or answers not accepted and hand them in after marking to improve the final Marking Scheme.
- The Moderators (Sue and Anu) will sample the marking of all teams.
Условие
Account for the global distribution of tropical cyclones/hurricanes.
Решение
Level marking:
Award 2 marks each for 2 fully-elaborated points.
Award 1 mark for non-elaborated point:
- Tropical cyclones typically found between 30 degrees North and South of Equator – 1m. Tropical cyclones develop in warm ocean waters of more than 26°C, with a depth of at least 50 m – 1m (if answer mentions warm/hot water without specific temperature, no marks).
- Track of the tropical cyclones moves away from the Equator – 1m.
- As the Coriolis force helps maintain the low pressure of the weather system, cyclones are typically found near, but not at the Equator – 1m.
- Tropical areas also tend to have an atmosphere which cools fast enough with height (is “unstable” enough) such that it encourages thunderstorm activity – 1m.
- It is the thunderstorm activity which allows the heat stored in the ocean waters to be liberated for the tropical cyclone development – 1m.
Оригинал в Архива: 2015WRT-QuestionBooklet.pdf · официални решения: 2015WRT-Marking.pdf