In the milky way galaxy - Study guides, Class notes & Summaries

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. What are the characteristics of spiral galaxies? - They contain abundant clouds of cool gas and dust, are rare...

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...

_____________________ is the study of the history of life on Earth. -Correct Answer Paleontology Earth is believed to be _________________________________. -Correct Answer 4.5 billion years old protects Earth from harmful solar wind particles; responsible for the Northern Lights (Aurora Borealis); lies deep within the Earth -Correct Answer Earth's Magnetic Field charged particles escape from the sun's gravitational pull -Correct Answer Solar Wind What would be most different ab...

White dwarfs: properties - Remaining cores of dead, low mass stars Electron degeneracy pressure supports them against gravity Slowly fade with time Sirius and its hot WD companion White dwarfs with same mass as Sun are about same size as Earth; slowly cooling Typical density 10^6 gram / cubic cm Higher mass white dwarfs are smaller Cannot be more massive than 1.4MSun, the Chandrasekhar limit WDs in binaries: nova, supernova Type I - Mass falls toward white dwarf from binary companion ...

ASTRONOMY FINAL EXAM STUDY GUIDE TEST. Create your "cosmic address" by arranging the following objects from small to large - CORRECT ANSWER you, Earth-Moon system, Solar System, solar interstellar neighborhood, Milky Way, Local Group, Local Supercluster, Universe The astronomical unit (AU) is commonly used as a measure of distance in the Solar System. Place the Solar System objects in the appropriate bin according to their average distance from the Sun. - CORRECT ANSWER Less than 1 A...

Put the following into perspective: the size of our solar system; the distance to nearby stars; the size of the Milky Way Galaxy; the size of the observable universe. Rank from largest to smallest. To rank items as equivalent, overlap them. correct answers The observable universe, The Milky Way Galaxy, Distances to nearby stars, and The Solar system Light-year: correct answers The distance that light travels in 1 year, which is about 9.46 trillion kilometers. Astronomical Unit: correct an...

Test Bank For Astronomy 1st Edition by Andrew Fraknoi 8284, 3 Chapter 1: Science and the Universe: A Brief Tour Chapter 2: Observing the Sky: The Birth of Astronomy Chapter 3: Orbits and Gravity Chapter 4: Earth, Moon, and Sky Chapter 5: Radiation and Spectra Chapter 6: Astronomical Instruments Chapter 7: Other Worlds: An Introduction to the Solar System Chapter 8: Earth as a Planet Chapter 9: Cratered Worlds: The Moon and Mercury Chapter 10: Earthlike Planets: Venu...

What is our cosmic address? - correct answer Earth, Solar System, Milky Way Galaxy, Local Group, Laniakea Supercluster How big is the sun in comparison to other stars? - correct answer Medium sized How many stars does the milky way galaxy consist of? - correct answer 100 Billion or 10^11 How many galaxies are in the local group? - correct answer 10-50 How many galaxies are in the Laniakea Supercluster? - correct answer 1000s of galaxies How fast would light travel around earth? - ...

PHSC 121 Homeworks (1-4) 1st Exam Questions All Correctly Answered Astronomy is the study of ___________________. a. the Solar System b. galaxies c. the entire universe d. the planets of the Solar System - Answer -c. the entire universe Which of the following is not a step in the scientific method? a. evaluate science opinion b. refine hypothesis, develop theory c. evaluate data d. draw new conclusions from experimental data and observations - Answer -a. evaluate science opinio...

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 ...