Quiz
Black Holes
3 years ago by
craniumfire
Save
Edit
Live modes
Start a live quiz
Asynchronous learning
Assign homework
20 questions
Preview
Show answers
  • Question 1
    30 seconds
    Report an issue
    Q. If a dying star's core is less than 1.4 times the mass of the Sun, it becomes ___
    answer choices
    a white dwarf
    a neutron star
    a red giant
    a black hole
  • Question 2
    30 seconds
    Report an issue
    Q. If a dying star's core is between 1.4 and 2.8 times the Sun's mass, it becomes ___
    answer choices
    a white dwarf
    a neutron star
    a red giant
    a black hole
  • Question 3
    30 seconds
    Report an issue
    Q. If a dying star's core is more than 2.8 times the Sun's mass, it becomes ___
    answer choices
    a white dwarf
    a neutron star
    a black giant
    a black hole
  • Question 4
    30 seconds
    Report an issue
    Q. For Earth, the escape velocity is about ___
    answer choices
    11 km per hour
    11 km per second
    600 km per hour
    600 km per second
  • Question 5
    30 seconds
    Report an issue
    Q. A neutron star, with its immense gravity, can have an escape velocity that's up to ___
    answer choices
    one quarter of the speed of light
    half the speed of light
    the speed of light
    twice the speed of light
  • Question 6
    30 seconds
    Report an issue
    Q. Nothing can escape, not even light, once the core of a neutron star shrinks down to ___
    answer choices
    roughly 1.8 km
    roughly 8.1 km
    roughly 18 km
    roughly 81 km
  • Question 7
    30 seconds
    Report an issue
    Q. The surface around a black hole, where the escape velocity is the speed of light, is called ___
    answer choices
    the observable boundary
    the event horizon
    the progenitor surface
    The Chandrasekhar Limit
  • Question 8
    30 seconds
    Report an issue
    Q. To become a black hole,  the original star must have a mass of ___
    answer choices
    more than 1/4 of the Sun's mass
    more than 1.4 times the Sun's mass
    more than 4 times the Sun's mass
    more than 20 times the Sun's mass
  • Question 9
    30 seconds
    Report an issue
    Q. If you could turn the Sun into a black hole, then the Earth would ___
    answer choices
    quickly get pulled in
    orbit it slower than it does now
    orbit it pretty much exactly as it does now
    orbit it faster than it does now
  • Question 10
    30 seconds
    Report an issue
    Q. The strength of gravity you feel from an object depends on ___
    answer choices
    how large it is and your distance from its center
    how massive it is and your distance from its center
    how large it is and its density
    how massive and dense it is
  • Question 11
    30 seconds
    Report an issue
    Q. Black holes with masses ranging from about 3 to a few dozen solar masses are called ___
    answer choices
    dwarf black holes
    mini black holes
    stellar-mass black holes
    gray holes
  • Question 12
    30 seconds
    Report an issue
    Q. The black hole at the center of our own Milky Way galaxy has a mass of ___
    answer choices
    4.3 times the Sun's mass
    430 million times the Sun's mass
    4,300 times the Sun's mass
    4.3 million times the Sun's mass
  • Question 13
    30 seconds
    Report an issue
    Q. The vertical stretching of an object, as it falls into a black hole, is called ___
    answer choices
    fettuccination
    the linguine effect
    spaghettification
    the noodle response
  • Question 14
    30 seconds
    Report an issue
    Q. What we perceive as gravity is really just ___
    answer choices
    a dent in reality-fabric
    a warping of space-time
     a bump in the stellar-textile
    a bending of the event horizon
  • Question 15
    30 seconds
    Report an issue
    Q. Due to gravity,  your clock ticks a bit slower than for someone  ___
    answer choices
    in a deep mine
    near a neutron star
    far away from planets and stars
    near a black hole
  • Question 16
    30 seconds
    Report an issue
    Q. At the event horizon of a black hole, time ___
    answer choices
    slows to a crawl
    essentially stops
    speeds up
    reverses
  • Question 17
    30 seconds
    Report an issue
    Q. When you're at the event horizon, an outside observer would see the light coming from you ___
    answer choices
    infinitely blue-shift
    slightly blue-shift
    slightly red-shift
    infinitely red-shift
  • Question 18
    30 seconds
    Report an issue
    Q. From your viewpoint, as you fall into a black hole, you'd see the universe ___
    answer choices
    slow down, and the light from it blue-shift
    speed up, and the light from it blue-shift
    slow down, and the light from it red-shift
    speed up, and the light from it red-shift
  • Question 19
    30 seconds
    Report an issue
    Q. The math and physics to explain black holes is ___
    answer choices
    fairly easy to understand
    uncomplicated
    slightly complicated
    fiercely complicated
  • Question 20
    30 seconds
    Report an issue
    Q. Black holes come in different sizes, but for all of them, the escape velocity is ___
    answer choices
    a fraction of the speed of light
    nearing the speed of light
    at the speed of light
    greater than the speed of light
Report an issue
Why show ads?
Report Ad
Lessonsnew
Enter Code