Celestial sphere Study guides, Class notes & Summaries

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...

1) How many stars can you see with your naked eye on a clear, moonless night from a dark location? A) fewer than a thousand B) a few thousand C) about ten thousand D) about a hundred thousand E) more than you could count in your lifetime - correct answer B) a few thousand 2) Which of the following best describes the modern definition of a constellation? A) a region of the celestial sphere B) a pattern of bright stars in the sky C) a Greek mythological figure D) a collection of stars ...

Celestial Sphere correct answers For purposes of surveying, an assumption is made that the stars and other heavenly bodies are all fixed within a gigantic sphere with an infinite radius whose center is the Earth. This sphere is called the ________. 360 degrees 59.14' per 24 hours correct answers The speed of rotation of the celestial sphere is _______, thus making slightly more than one revolution per day. Angular relations correct answers Are measured on earth between celestial bodies or...

Constellations Correct Answer-Recognizable patterns of stars in the sky (big dipper, orions belt) Makes locating stars easier. The official borders were set in 1928 by the International Astronomical Union (IAU). How many constellations are there? Correct Answer-88 Celestial sphere Correct Answer-our view of the night sky; an artificial sky map created by astronomers that applied a coordinate system to it, analogous to the coordinate system of north-south latitude and east-west longitude ...

Even though it is not realistic, why is the celestial sphere model useful? Correct Answer-Describes the locations of things "on" the sky. Declination is measured from the _________ to the __________ Correct Answer-celestial equator; celestial poles How do you measure right ascension? Correct Answer-Measured from "First point in Aries" around the celestial equator Latitude is to declination as longitude is to __________ Correct Answer-Right Ascension Why are the zodiacal constella...

astronomy Correct Answer-the oldest natural science how many constellations are there over the celestial sphere? Correct Answer-88 Ecliptic Correct Answer-apparent path of the Sun across the Celestial Sphere. Constellation Correct Answer-a region in the sky useful for mapping the sky. The brightest stars in a constellation Correct Answer-may actually be quite far away from each other zentih Correct Answer-the point directly overhead (altitude= 90) horizon Correct Answer-all poi...

Celestial Sphere correct answers a sphere with an infinite radius whose center is the earth 360°59.14' or 24 hours, 1 rev a day correct answers speed of rotation of the celestial sphere Celestial Poles correct answers are the points on the surface of the celestial sphere pierced by the extension of the earth's polar axis Celestial Axis correct answers is the prolongation of the earth's polar axis Zenith correct answers is the point where the plumb line at the place of observation...

Why do we see the Moon appear to go through phases as seen from Earth? A. The Moon reflects "Earthshine", so it depends on how much light from the Earth is hitting the Moon B. As the Moon rotates, it presents a different phase to us over the course of its "day". C. Depending on where the Moon is along its orbit, we see different amounts of its illuminated side D. The Earth's shadow blocks out part of the Moon from time to time - C. Depending on where the Moon is along its orbit, we see...

AST 101 EXAM 1 QUESTIONS AND ANSWERS 100% PASS the average distance from the earth to the sun is what unit? 1 astronomical unit the distance light travels in a year 1 light year the andromeda galaxy is how many light years away 2,000,000 ly the stars that appear to lie on a dome above us is the ____ _______ the celestial sphere the stars appear to be ____ on the celestial sphere fixed the earth is what in the celestial sphere model? the center of the universe what part of the celestial sph...

What is the definition of the Astronomical Unit? correct answer: The average distance between the Sun and the Earth Which sequence is correct when ordered by increasing size? correct answer: Earth Solar System Milky Way Galaxy Galaxy Clusters How many stars does a typical galaxy like the Milky Way Galaxy contain? correct answer: a few hundred billion How long does it take for light to cross the diameter of the Milky Way Galaxy? correct answer: about 100,000 years Which of the ...