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Black Holes

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  • Which of these statements about black holes is true?
    Black holes suck up the entire universe.
    Black holes can only pull in objects during the daytime.
    Black holes can pull in gas, dust, and even light
    Black holes only exist in science fiction.
  • Which of these is NOT likely to become a black hole?
    A star much bigger than the Sun
    Our Sun
    A very massive star at the end of its life
    A giant star that runs out of fuel
  • How are most stellar black holes formed?
    When a massive star collapses after running out of fuel
    When two planets collide
    When the Sun explodes
    When a comet enters Earth's atmosphere
  • What is a black hole's event horizon?
    The point beyond which nothing can escape
    The centre of the black hole
    A ring of stars around the black hole
    A cloud of gas surrounding the black hole
  • Which type of black hole could allow you to cross the event horizon before being stretched?
    A neutron star
    A tiny asteroid
    A white dwarf
    A supermassive black hole
  • What would happen to an astronaut who got too close to a small black hole?
    They would freeze into ice immediately
    They would be stretched into a long, thin shape by gravity
    They would instantly become invisible
    They would float safely around it forever
  • What is the closest known black hole to Earth?
    It is inside our Solar System
    It is on Mars
    It is over 1,000 light-years away
    It is between Earth and the Moon
  • Approximately how massive can supermassive black holes be?
    Smaller than Jupiter
    Millions or billions of times the mass of the Sun
    About the same mass as Earth
    Twice the mass of the Moon
  • How do astronomers know a black hole is present if they cannot see it directly?
    They watch it glow brightly in visible light
    They see its shadow on the Moon
    They observe its effects on nearby stars, gas, and light
    They listen for loud sounds in space
  • Where are supermassive black holes usually found?
    Between Earth and the Moon
    Inside planets
    At the centres of galaxies
    On the edge of the Solar System
  • Why do scientists still not fully understand what happens at a singularity?
    Black holes are too small to study
    Current physics cannot fully explain the extreme conditions
    It is too far from Earth
    No one has looked through a telescope
  • Why can't light escape from a black hole?
    Space is too dark
    Light is too slow
    There is no oxygen
    Its gravity is too strong
  • Which element marks the end of energy-producing fusion inside a massive star?
    Oxygen
    Hydrogen
    Helium
    Iron
  • What may eventually happen to black holes after an extremely long time?
    They may completely evaporate
    They freeze forever
    They turn into planets
    They become comets
  • Which statement best describes a black hole?
    A giant empty hole in space with no gravity
    An object with gravity so strong even light can’t escape
    A cloud made entirely of gas
    A dying planet covered in darkness
  • According to the video, how do supermassive black holes probably grow?
    By creating new stars
    By absorbing matter and merging with other black holes
    By freezing nearby planets
    By collecting sunlight
  • What is a light-year?
    The time it takes the Earth to orbit the Sun
    The brightness of a star
    The distance light travels in one year
    The age of a galaxy
  • What is believed to be at the centre of a black hole?
    A galaxy
    A planet
    A giant star
    A singularity
  • What did Stephen Hawking predict black holes emit?
    Magnetic waves
    Solar wind
    Hawking radiation
    Gamma bursts
  • What effect does Hawking radiation have on black holes?
    They become larger every day
    They stop attracting objects
    They slowly lose mass over time
    They become stars again
  • What would someone far away see if you fell towards a black hole?
    You disappear instantly
    You appear to slow down
    You bounce away
    You speed up continuously
  • Which force is mainly responsible for creating a black hole?
    Magnetism
    Friction
    Gravity
    Electricity
  • What is "spaghettification"?
    The stretching of an object caused by strong gravity
    A star turning into a planet
    A black hole exploding
    A black hole becoming invisible
  • What happens if our Sun became a black hole?
    All the planets would immediately be sucked in
    Earth would explode instantly
    The Moon would become a star
    The planets would continue orbiting it
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