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

    The words "elliptical", "irregular" and "peculiar" are used to classify galaxies based on ___

    answer choices

    behavior

    shape

    location

    mass

  • Question 2
    30 seconds
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    Q.

    In the 1960s, the peculiar object 3C273 was eventually determined to be ___

    answer choices

    an unassuming blue star

    a galaxy emitting radio waves

    a blue star emitting radio waves

    an unassuming galaxy

  • Question 3
    30 seconds
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    Q.

    Compared to our Sun, how much more energy is blasted out by 3C273, the brightest quasar in the sky?

    answer choices

    4 thousand times

    4 million times

    4 billion times

    4 trillion times

  • Question 4
    30 seconds
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    Q.

    The most powerful energy source in the entire cosmos was dubbed, for short, a ___

    answer choices

    luminar

    pulsar

    quasar

    x-rayser

  • Question 5
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    Q.

    Galaxies that emit x-rays and gamma rays were given the generic name ___

    answer choices

    EM emitters

    active galaxies

    XG blasters

    emission galaxies

  • Question 6
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    Q.

    Which telescope was first used to search for evidence of black holes at the cores of galaxies?

    answer choices

    the Spitzer Space Telescope

    the Large Millimeter Telescope

    the Hubble Space Telescope

    the James Webb Space Telescope

  • Question 7
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    Q.

    What appears to be at the heart of every big galaxy we see?

    answer choices

    a pulsar

    a quasar

    a bar of blue stars

    a huge black hole

  • Question 8
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    Q.

    The flat disk of material that swirls around a black hole at ferocious speeds is called ___

    answer choices

    an accretion disk

    a spiral drain

    a whirling conduit

    an accumulation saucer

  • Question 9
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    Q.

    In which direction do active galaxies launch beams of matter and energy?

    answer choices

    in random directions

    along a single radius of the disc

    in the plane of the disk

    along the poles of the disk

  • Question 10
    30 seconds
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    Q.

    If the poles of an active galaxy are aimed right at us, we see ___

    answer choices

    lots of infrared radiation

    lots of visible and ultraviolet light

    lots of radio waves

    lots of x-rays and gamma rays

  • Question 11
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    Q.

    A black hole, like the one in the Milky Way, that is not actively feeding is said to be ___

    answer choices

    impelling

    asleep

    quiescent

    progressive

  • Question 12
    30 seconds
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    Q.

    One way to flip a quiescent black hole from a baby to a monster is through ___

    answer choices

    galactic collisions

    old age

    a dissipating accretion disk

    frictional forces

  • Question 13
    30 seconds
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    Q.

    Our Milky Way is part of a small knot of a few dozen galaxies that we call ___

    answer choices

    the Narrow Knot

    the Local Group

    the Small Aggregation

    the Regional Cluster

  • Question 14
    30 seconds
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    Q.

    Which two galaxies completely overpower the Local Group?

    answer choices

    the Large and Small Magellanic Clouds

    the Milky Way and the Large Magellanic Cloud

    the Triangulum Galaxy and the Andromeda Galaxy

    the Milky Way and the Andromeda Galaxy

  • Question 15
    30 seconds
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    Q.

    The spectrum of the Andromeda Galaxy is blue-shifted, which means it's ___

    answer choices

    approaching us

    receding from us

    expanding

    contracting

  • Question 16
    30 seconds
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    Q.

    What name is given to the merger of the Milky Way and the Andromeda Galaxy?

    answer choices

    Androlkey

    the Andromeda Way

    Milkomeda

    the Grand Merge

  • Question 17
    30 seconds
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    Q.

    Located about 50 million light years away, what is the nearest galaxy cluster to us?

    answer choices

    Abell 2065

    the Hydra Cluster

    the Centaurus Cluster

    the Virgo Cluster

  • Question 18
    30 seconds
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    Q.

    What sits right at the center of many galaxy clusters?

    answer choices

    a quasar

    a huge elliptical galaxy

    a cluster of black holes

    a neutron star

  • Question 19
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    Q.

    Clusters of galaxies themselves fall into even bigger groups called ___

    answer choices

    supergroups

    superclusters

    megaclusters

    megagroups

  • Question 20
    30 seconds
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    Q.

    Superclusters appear to fall along tremendously long, interconnected and intersecting ___

    answer choices

    threads

    filaments

    strands

    tendrils

  • Question 21
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    Q.

    In between the galactic filaments are vast regions relatively empty of galaxies called ___

    answer choices

    voids

    holes

    drains

    barrens

  • Question 22
    30 seconds
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    Q.

    What image, taken in 1995, shows a small grain of the sky filled with thousands of galaxies?

    answer choices

    the James Webb Deep Field

    the Palomar Long Exposure

    the Spitzer Long Exposure

    the Hubble Deep Field

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