Celestial sphere Study guides, Class notes & Summaries

Heliocentric Theory Places the sun at the center of the solar system, stating that ll other bodies in the solar system orbit it. This was in direct contradiction to Ptolemy's geocentric theory, which stated Earth was the center of the Universe. Geocentric Theory Earth is the center of the Universe Nicolaus Copernicus Widely credited as the father of the heliocentric theory. Although he was not the first to propose the concept, his was the first mathematical model which correctly predicted...

heliocentric theory places the sun at the CENTER of the solar system, states that all other bodies in the solar system orbit it. This was in direct contradiction to Ptolemy's geocentric theory, that stated the earth was the center of the universe Nicolaus Copernicus widely credited as the father of the heliocentric theory (sun is the center of the universe) he was not the first to propose the concept but his mathematical model was the first that correctly predicted the movement of the pl...

What is the definition of the Astronomical Unit? - The average distance between the Sun and the Earth Which sequence is correct when ordered by increasing size? - Earth Solar System Milky Way Galaxy Galaxy Clusters How many stars does a typical galaxy like the Milky Way Galaxy contain? - a few hundred billion How long does it take for light to cross the diameter of the Milky Way Galaxy? - about 100,000 years Which of the following is the same as 1.573 X 10⁴? - 15730 Given onl...

PHSC102 - Midterm study Guide Questions And All Correct Answers What are the Steps to the Scientific Method? - Answer -Step 1- make an observation, pose a question or problem Step 2 - make a hypothesis (an educated guess) Step 3 - experiment - hypothesis must be testable and reproducible Step 4 - Conclusion - Results The study of the Universe. - Answer -Astonomy Totality of all space, time, matter, and energy. - Answer -Universe Radius of Earth? - Answer -6378 Km Distance from ...

Astronomy 101 Exam 1 Questions with All Correct Answers What makes a good theory? (scientific method) - ANSWER Testable and Simple What is the process of the scientific method? - ANSWER 1) Observation 2) Model 3) Prediction 1) Universe 2) Astronomy - ANSWER 1) The totality of all space, time, matter, and energy 2) The study of the universe Light years - ANSWER The distance travelled by light in a year 1) Theory 2) Model - ANSWER 1) Ideas/assu...

Chapter 0 Charting the Heavens: The Foundations of Astronomy 1) Right ascension in the sky is very similar to latitude on the Earth. Answer: FALSE Diff: 1 Section Ref.: 0.1 2) Latitude and right ascension are coordinate systems used to find objects on the celestial sphere. Answer: FALSE Diff: 1 Section Ref.: 0.1 3) The celestial sphere is divided into 88 modern constellations. Answer: TRUE Diff: 1 Section Ref.: 0.1 4) In the sky, declination is measured in degrees north or south of th...

Astronomy Exam 1 Questions With Explanations astronomical unit (AU) - ANS the average mean distance between the Earth and Sun speed of light - ANS 186,000 mi/sec light year - ANS 6,000,000,000,000 miles; the distance that lights travels in 1 year through a vacuum celestial sphere - ANS an imaginary sphere of large radius which the ancient's believed the whole heavens were plastered onto constellations - ANS in modern astronomy, 88 non-overlapping sky regions, cove...

Astronomy Exam 1 Questions And Answers What does the light stuff tell us about the Moon? - ANS The portions are rougher, higher-elevated, lighter, have more craters present, and cover more surface. What does the dark stuff tell us about the Moon? - ANS The portions are smoother, darker, have fewer craters, and cover less surface. Having more craters means what? - ANS Younger surface on dark stuff; had volcanism at one point. How do rice paddies, domestication of livestock, an...

Astronomy 101 Final Test Questions and Answers All Correct The ancient Greeks identified 7 objects that change their location night-to-night relative to the background, "fixed" stars of the celestial sphere. They dubbed these objects the "wanderers". Which one of the "wanderers" wanders the most (i.e., changes its position the most from one night to the next) relative to the fixed stars of the celestial sphere? - Answer-The moon (has the fastest apparent motion in the sky, changing its l...

ACT EXAM Questions With 100% Correct Answers Latest Updated 2024 (GRADED) acceleration - Answer Change in velocity divided by the time it takes for the change to occur acceleration due to gravity - Answer 9.8 meters per second squared accuracy - Answer A description of how close a measurement is to the true value of the quantity measured. acid - Answer A substance that increases the hydrogen ion concentration of a solution. analysis - Answer A detailed examination of the elements or struct...