Astro 101 - Exam 1 UMich Questions & Answers 2023/2024

Astro 101 - Exam 1 UMich Questions & Answers 2023/2024 what is our planet in the solar system - ANSWER-part of the solar system, in the milky way galaxy, in local group of galaxies, in local supercluster how did we come to be - ANSWER-the Big Bang which produced hydrogen and helium where did elements come from - ANSWER-the big bang produced H and He, which are the base of other elements constructed in stars how old are we in comparison to the universe - ANSWER-human civilization is a second of a year, and our own life is a fraction of a second how is earth moving - ANSWER-earth rotates on an axis once a day and orbits the Sun at 1 AU (150 million kilometers) how can we specify the position of an object in the local sky - ANSWER-altitude above the horizon and direction along the horizon why do stars rise and set - ANSWER-because of Earth's rotation why do the constellations we see depend on latitude and time of year - ANSWER-your location determines which constellations are hidden by earth the time of year determines the location of the Sun and the celestial sphere what causes the seasons - ANSWER-the tilt of the Earth's axis what are the summer and winter solstices - ANSWER-when the Northern hemisphere gets its most and least direction sunlight