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Galaxies, part 1
2 years ago by
craniumfire
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  • Question 1
    30 seconds
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    Q.

    What is the name of our home galaxy?

    answer choices

    Messier 81

    the Whirlpool Galaxy

    the Milky Way

    the Andromeda Galaxy

  • Question 2
    30 seconds
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    Q.

    In the early 20th Century, "faint fuzzies" displaying a variety of shapes in the sky were simply called ___

    answer choices

    faint fuzzies

    nebulae

    smoky dots

    bulging halos

  • Question 3
    30 seconds
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    Q.

    Which astronomer argued, in 1920, that "the Milky Way was all there is"?

    answer choices

    Harlow Shapley

    Edwin Hubble

    Heber Curtis

    Milton Humason

  • Question 4
    30 seconds
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    Q.

    Which astronomer argued, in 1920, that the Milky Way was just one of many galaxies?

    answer choices

    Harlow Shapley

    Edwin Hubble

    Heber Curtis

    Milton Humason

  • Question 5
    30 seconds
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    Q.

    Shapley erroneously noted that one of the spiral nebulae had been seen to rotate, so it must be ___

    answer choices

    small

    big

    old

    young

  • Question 6
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    Q.

    Which astronomers "unlocked the mystery" of spiral nebulae in the 1920's?

    answer choices

    Harlow Shapley and Milton Humason

    Heber Curtis and Milton Humason

    Edwin Hubble and Harlow Shapley

    Edwin Hubble and Milton Humason

  • Question 7
    30 seconds
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    Q.

    In the 1920's, what type of pulsating stars were observed in the spiral nebula M31 in Andromeda?

    answer choices

    RR Lyrae stars

    G2V type stars

    pulsars

    Cepheid variables

  • Question 8
    30 seconds
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    Q.

    It was known, for Cepheid variables, that the time it took them to pulse was directly related to their ___

    answer choices

    luminosity

    size

    mass

    distance from Earth

  • Question 9
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    Q.

    If you can measure the period of Cepheid variables, you can determine how far away they are simply by ___

    answer choices

    calculating their absolute magnitude

    measuring the red shift

    measuring their apparent brightness

    using spectroscopy

  • Question 10
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    Q.

    In the 1920's it was determined that the "Great Andromeda Nebula" was actually ___

    answer choices

    a spiral nebulae

    a Cepheid variable

    within the Milky Way

    an entirely separate galaxy

  • Question 11
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    Q.

    We still classify galaxies according to Hubble's original system, based on ___

    answer choices

    the number of contained stars

    the distance across

    their overall shapes

    the type of gas and dust

  • Question 12
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    Q.

    What type of galaxy is the Milky Way?

    answer choices

    elliptical

    spiral

    peculiar

    irregular

  • Question 13
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    Q.

    What type of galaxy is characterized by a broad, flat, rotating disk of stars, gas and dust, and a central bulge?

    answer choices

    elliptical

    spiral

    peculiar

    irregular

  • Question 14
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    Q.

    What type of galaxy often has a bar of stars extending across the central part of the galaxy?

    answer choices

    elliptical

    spiral

    peculiar

    irregular

  • Question 15
    30 seconds
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    Q.

    The choppy or patchy arms, that resemble tufts of cotton, in some spiral galaxies are called ___

    answer choices

    hairy arms

    fluffy helicoids

    flocculent spirals

    willow the wisps

  • Question 16
    30 seconds
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    Q.

    Star forming nebulae in spiral arms are colored pink by the characteristic glow of ___

    answer choices

    cooling helium

    hot metallic elements

    excited oxygen

    warm hydrogen

  • Question 17
    30 seconds
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    Q.

    When seen edge-on, what feature can bisect a spiral galaxy "like a racing stripe right down the middle"?

    answer choices

    black holes

    dust clouds

    luminous blue stars

    older red stars

  • Question 18
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    Q.

    What type of galaxy is puffy, with no overall structure and populated with older stars?

    answer choices

    elliptical

    spiral

    peculiar

    irregular

  • Question 19
    30 seconds
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    Q.

    Current thinking is that elliptical galaxies are the products of ___

    answer choices

    condensed nebula

    collapsed spiral galaxies

    supernova explosions

    galactic collisions

  • Question 20
    30 seconds
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    Q.

    Colliding galaxies can glow blue and pink as stars are born and ___

    answer choices

    quickly explode as supernova

    light up the hydrogen clouds around them

    fuse heavy metals

    reflect light off of dust clouds

  • Question 21
    30 seconds
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    Q.

    We think most large galaxies, including our own Milky Way, grew to their current bulk by ___

    answer choices

    consuming smaller galaxies

    colliding with other large galaxies

    merging with nebula

    gaining dark matter

  • Question 22
    30 seconds
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    Q.

    What type of galaxy has a shape that's weird and distorted, essentially all due to collisions?

    answer choices

    elliptical

    peculiar

    odd

    irregular

  • Question 23
    30 seconds
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    Q.

    What type of galaxy tends to be small and are truly shapeless?

    answer choices

    elliptical

    peculiar

    odd

    irregular

  • Question 24
    30 seconds
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    Q.

    The Large and Small Magellanic Clouds are satellite galaxies of the Milky Way, visible ___

    answer choices

    from the Southern Hemisphere

    from the Northern Hemisphere

    in the winter

    in the summer

  • Question 25
    30 seconds
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    Q.

    What is the biggest and most active star forming gas cloud in any nearby galaxy?

    answer choices

    the Orion Nebula

    the Eagle Nebula

    the Crab Nebula

    the Tarantula Nebula

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