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Black Holes

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