Astr 100 - Study guides, Class notes & Summaries

USASK ASTR 102 Final | 100% Correct Answers | Verified | Latest 2024 Version

We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) The first stellar mass black hole identified, Cygnus X-1, was found in 1973. The n...

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ASTR 102 Final Lecture Questions | 100% Correct Answers | Verified | Latest 2024 Version

Q1.1: If every star in the universe was a grain ofsand, which of the following would be filled ~4meters deep in sand? A. This classroomB. Cal Poly campusC. SLO countryD. CaliforniaE. Continental US - SLO Q3.2: If you walk out of this building and face directly south, which direction is east? A. Slightly to the rightB. Slightly to the leftC. Directly rightD. Directly leftE. Behind you - D Q4.1: Imagine that from your current location you observe a star rising directly in the east.When this s...

ASTR 1020 FINAL EXAM LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024

How many stars are in our galaxy? - correct answer 4 x 10^11 What is our cosmic address? - correct answer Earth Solar System Interstellar Neighborhood Milky Way Lanieakea Observable Universe Infinite Universe What is an astronomical unit? - correct answer The average distance between the Sun and the Earth As a blackbody becomes hotter, it also becomes ______ and ______. - correct answer More luminous, bluer. If an electromagnetic wave's frequency increased, then - correct ...

Consider a spectroscopic binary star system in which the spectra of both stars are observed. If Star A is more massive than Star B, which star has the greater orbital velocity? a) Star A b) Star B c) They both have the same velocity d) The star that is closest to the center of mass e) It depends on where they are in their orbits - Consider a spectroscopic binary star system in which the spectra of both stars are observed. If Star A is more massive than Star B, which star has the greater o...

What are the Milky Way Galaxy's spiral arms? - The spiral arms are places where stars are formed from clouds of gas and dust Where are you in the Universe? If you had to give directions to your location in the Universe, what directions would you give? - We are the third planet away from the Sun. Our Solar System is located in one of the spiral arms of the Milky Way Galaxy, one within the Local Group of galaxies Why do astronomers now label Pluto a "dwarf planet"? - Due to its small size ...

Plants and animals are - two small branches of the diverse "tree of life" on Earth. How did oxygen (O2) get into Earth's atmosphere? - It was released by life through the process of photosynthesis Based on DNA studies, it seems that all life on Earth - shares a common ancestor According to fossil evidence how far back in time did life on Earth exist? - about 3.5 billion years or more Which of the following best describes the predominant scientific view of the origin of life on Earth? - ...