Stars and galaxies - Study guides, Revision notes & Summaries

c correct answers 1. Where did all of the heavy elements that are found inside of your own body (e.g., carbon and nitrogen, phosphorous, copper and gold) get created? a. 50% of the heavy elements were created directly from the Big Bang and the other 50% were created later inside of stars or when stars exploded. b. 10% of the heavy elements were created directly from the Big Bang and about 90% were created later inside of stars or when stars exploded. c. 100% of the heavy elements were c...

AST 101 Rio Salado Mid-Term: Multiple Choice & Essay Questions and Answers Already Passed What is the main difference between a planet and a star? A planet orbits a star and does not produce its own light, while a star generates its own light and energy through nuclear fusion. What causes the phases of the Moon? The phases of the Moon are caused by the changing angles from which we view the Moon’s illuminated half as it orbits Earth. What is the significance of the Hubble Sp...

Explain why we see objects at great distances as they were in the distant past Ans- -The universe is constantly expanding -an observer in any galaxy sees more distant galaxies moving away faster -Distances and speeds help determine the universe is expanding Summarize the major cosmic events that prepared the way for life on Earth Ans- -Big Bang created matter -Gravity pulled that matter together to form galaxies -Galaxies created stars alongside nuclear fusion -Stars created elements nec...

TEST BANK 21st Century Astronomy FOURTH EDITION, Answered-1. Astronomy I. Definition i. Astronomy loosely translated means “patterns among the stars” (MC: 1) II. Your Place in the Universe i. Your address: street, city, town, country, Earth, Sun, Milky Way, Local Group, Virgo Supercluster, universe (MC: 3, SA: 1) ii. Solar System: classical versus dwarf planets (TF: 1, 2, MC: 1–4, 7, SA: 2) iii. Milky Way: contains 200 to 400 billion stars (MC: 3, 5–7) iv. Local Group (MC: 3, 8) ...

Aristotle believed that .... A. the Earth rotated around the Sun B. the Sun rotated around the Earth C. the Sun and the Earth rotated around a common gravity spot D. the Earth and Sun both stand still correct answers B. Buffon thought the world was about __________ years old. 1000 7500 75,000 7,500,000,000 correct answers C. The "Father of Modern Geology" is .... A. Strabo B. Steno C. Lyell D. Hutton correct answers D. Venus is a _____________. Gas Giant Terrestri...

TABLE OF CONTENTS: Preview: The Cosmic Landscape Chapter 1: The Cycles o f the Sky Chapter 2: The Rise of Astronomy Essay 1: Backyard Astronomy Chapter 3: Gravity and Motion Chapter 4: Light and Atoms Essay 2: Special and General Relativity Chapter 5: Telescopes Chapter 6: Earth Chapter 7: The Moon and Tides Essay 3: Keeping Time Chapter 8: The Terrestrial Planets Chapter 9: The Giant Planets Chapter 10: Small Bodies Orbiting the Sun Chapter 11: Planetary Systems Essay 4: Life in the Universe Ch...

Astro 102 Final Exam Ultimate Study Guide | 100% Correct Answers | Verified | Latest 2024 Version What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. Wh...

How old is the universe? correct answer: 14 billion years old How many kilometers make up a light year? correct answer: 10 trillion kilometers or 10 x 10^12 How many galaxies are present in the Local Group? correct answer: 40 Is there ever a time when we, on the Earth, are not in some type of motion? correct answer: no How far away are the nearest stars, excluding the Sun? correct answer: at least 4 light years away The elements hydrogen and helium were created during the Big...

A lightyear is the distance that _________ can travel in one _____ correct answers light, year How many km in a lightyear? correct answers 9.50 x 10^12 km How many KM in an AU correct answers 1.5 x 10^8 How many AU in a lightyear correct answers 63,000 AU Earth is a planet while the Sun is a________ correct answers Star Solar System correct answers consists of the sun, the planets, and some smaller bodies such as moon, asteroids, and comets - one planetary system Name the plane...

Light year definition correct answers The distance light travels in one year Light year distance correct answers 9.5*10^12 km Astronomical Unit (AU) definition correct answers Average distance from the Earth to the Sun AU distance correct answers 1.5*10^8 km Galaxy correct answers A great cloud of stars, gas, and dust held together by the combined gravity of all its matter Planetary Systems correct answers A set of gravitationally bound non-stellar objects in orbit around a star o...