USAAAO 2018, I кръг — Задача 11
USAAAO National Astronomy Olympiad First Round 02/12/2018-02/16/2018 Time Limit: 75 Minutes · 12 февруари 2018 г. · 1 т.
Внимание: Бележка към темата
The solutions document provides answer letters for all 30 problems and brief explanations for some problems.
Условие
Which planets have primary atmospheres?
A. Jupiter, Saturn, Uranus, and Neptune
B. Mercury, Venus, Earth, and Mars
C. Mars, Jupiter, and Saturn
D. Venus and Earth
E. Mercury and Mars
Решение
Answer: A
Primary atmospheres are formed of accreted gaseous material during the formation of the solar system.
Оригинал в Архива: usaaao-first-round-exam-2018.pdf · официални решения: usaaao_first_round_2018.pdf