full transcript
"From the Ted Talk by Fabio Pacucci: Could the Earth be swallowed by a black hole?"

Unscramble the Blue Letters

To determine whether a black hole could swallow the etarh, we first have to frgiue out where they are. But since they don’t emit light, how’s that possible? Fortunately, we’re able to observe their effect on the space around them. When matter approaches a black hole, the iesmnme gravitational field accelerates it to high speed. This etmis an enormous amount of light. And for objects too far away to be sucked in, the massive gravitational force still affects their orbits. If we observe several srats orbiting around an apparently empty point, a black hole could be leading the dance. Similarly, light that pssaes close enough to an eevnt horizon will be deflected in a phenomenon known as goataitianvrl lensing.

Open Cloze

To determine whether a black hole could swallow the _____, we first have to ______ out where they are. But since they don’t emit light, how’s that possible? Fortunately, we’re able to observe their effect on the space around them. When matter approaches a black hole, the _______ gravitational field accelerates it to high speed. This _____ an enormous amount of light. And for objects too far away to be sucked in, the massive gravitational force still affects their orbits. If we observe several _____ orbiting around an apparently empty point, a black hole could be leading the dance. Similarly, light that ______ close enough to an _____ horizon will be deflected in a phenomenon known as _____________ lensing.

Solution

  1. gravitational
  2. immense
  3. earth
  4. emits
  5. event
  6. stars
  7. figure
  8. passes

Original Text

To determine whether a black hole could swallow the Earth, we first have to figure out where they are. But since they don’t emit light, how’s that possible? Fortunately, we’re able to observe their effect on the space around them. When matter approaches a black hole, the immense gravitational field accelerates it to high speed. This emits an enormous amount of light. And for objects too far away to be sucked in, the massive gravitational force still affects their orbits. If we observe several stars orbiting around an apparently empty point, a black hole could be leading the dance. Similarly, light that passes close enough to an event horizon will be deflected in a phenomenon known as gravitational lensing.

ngrams of length 2

collocation frequency
black holes 10
black hole 9
supermassive black 4

Important Words

  1. accelerates
  2. affects
  3. amount
  4. apparently
  5. approaches
  6. black
  7. close
  8. dance
  9. deflected
  10. determine
  11. earth
  12. effect
  13. emit
  14. emits
  15. empty
  16. enormous
  17. event
  18. field
  19. figure
  20. force
  21. fortunately
  22. gravitational
  23. high
  24. hole
  25. horizon
  26. immense
  27. leading
  28. lensing
  29. light
  30. massive
  31. matter
  32. objects
  33. observe
  34. orbiting
  35. orbits
  36. passes
  37. phenomenon
  38. point
  39. similarly
  40. space
  41. speed
  42. stars
  43. sucked
  44. swallow