IOAA 2013, Отборен тур, вертикални въпроси — Задача 9. I.
13 т.
Условие
i. Assuming you are seeing the moon in the sky from Greece, how many days have passed since the last New Moon? (integer). [2 т.]
ii. Difference between the solar day and the sidereal day in minutes. [1 т.]
iii. The number of constellations [2 т.]
iv. The Whirlpool Galaxy is M__. [2 т.]
v. The four closest galaxies to the Milky Way in ascending order:
- SMC
- Andromeda
- Canis Major Irregular Dwarf
- Saggitarius dwarf irregular galaxy
- Triangulum galaxy
- Fornax Dwarf Spheroidal
- Barnard’s galaxy
- Maffei I
- LMC [4 т.]
vi. Number of Van Allen Radiation Belts. [1 т.]
vii. The L point through which matter from one star of a binary system escapes to the other. [1 т.]
Отговори
i. 25
Printed after the question as the grid entry (“- 25”) of the crossword answer sheet.
ii. 4
Printed after the question as the grid entry (“- 4”) of the crossword answer sheet.
iii. 88
Printed after the question as the grid entry (“- 88”) of the crossword answer sheet.
iv. 51
Printed after the question as the grid entry (“- 51”) of the crossword answer sheet.
v. 3491
Printed after the question as the grid entry (“- 3491”) of the crossword answer sheet.
vi. 2
Printed after the question as the grid entry (“- 2”) of the crossword answer sheet.
vii. 1
Printed after the question as the grid entry (“- 1”) of the crossword answer sheet.
Решение
Внимание: Непълно решение
The paper prints only the answer code after each question (the crossword grid entry); no worked solution is given.
i. - 25
ii. - 4
iii. - 88
iv. - 51
v. - 3491
vi. - 2
vii. - 1
Оригинал в Архива: Vertical_questions.pdf