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Ch. 30 Questions

SG

QuestionAnswer
What is the shape that follows no set pattern? Irregular
What are the 4 major arms? Sagittarius, Cygnus, Centaurus, Perseus
What is the universe where the expansion never stops? Open
Water covering the Earth is like what? Dark Energy
What is the notation for a round elliptical galaxy? E0
What is the time frame of Big Bang Theory? 14 billion years
What contains a massive black hole? Bulge
What are the two largest galaxies in local group? Andromeda & Milky Way
What is at the center of an active galaxy? Black Hole
What is used to map the shape of a galaxy? Radio Waves & Infrared Radiation
Who originated the E0-E7 classification? What is it? Hubble and it classifies both spiral and elliptical galaxies
What is the notation for elongated elliptical galaxy? E7
What are the 3 types of universes? Open, Closed, Flat
Star like object with emission lines in spectra? Quasars
What is the approximate number of galaxies in universe? 10 billion
What is our galaxy group name? Local
What is a minor arm? Orion
What is the study of the universe? Cosmology
Which constellation is the Center of Milky Way found near? Sagittarius
The notation SB stands for what? Barred Spiral
Where is 90% of galaxy’s mass contained? Halo
What is our Galaxy’s name? Milky Way
What is an example of a Spiral Galaxy? Andromeda or Milky Way
What are 3 problems with the Big Bang Theory? No evidence, no eye witness, and nothing can created anything
What is the measurement of things outside the universe? Light Years
What existed before the Big Bang Theory? Cosmic Background Radiation
What is the amount of time it takes light to reach Earth from the Sun? 8 minutes
What are 4 types of stars? Population 1 and 2, Cepheid, and RR Lyrae
What are stars that pulsate in the sky? Variable
What is a Population 1 star? Sun
What did Hubble discover in 1920s? Redshifts and Spectra
What are Disk-like Galaxies? Denoted by S; large, flat disk of interstellar gas and dust; arms of stars extend from disk
What are Elliptical Galaxies? Consists of tightly packed group of old stars; classified from 0-7
What is the Andromeda Galaxy? Spiral; bright elliptical object; sphere shaped object near the center are small galaxies
What are the 4 major galaxies? Dislike, Elliptical, Barred Spiral, and Irregular
What are the Local Galaxies? Contain 40 galaxies; 2 million light years in diameter
What is the Virgo Cluster? Contains 100 to 1000 galaxies and the galaxies are close together
What are Active Galaxies? Emits large amounts of energy in radio wavelengths
Created by: mjys02
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