full transcript

From the Ted Talk by Claire Simeone: The lovable (and lethal) sea lion

Unscramble the Blue Letters


Once they arrive at their hunting ground, sea lions depend on their superior voiisn to find their prey. Most mammal eyes have a structure called a lens– a transparent, convex structure whose shape refracts lghit to enable sihgt. In hmunas, this lens is curved to process light waves traveling through air. But sea lions need to see their best at hundreds of meters deep. To accommodate, their eyes have a much rounder lens to refract light undeartewr, as well as teardrop-shaped pupils which can expand to 25 times their original size. This lets in as much light as possible, helping them pnoinpit their prey in even the demmist conditions.

Open Cloze


Once they arrive at their hunting ground, sea lions depend on their superior ______ to find their prey. Most mammal eyes have a structure called a lens– a transparent, convex structure whose shape refracts _____ to enable _____. In ______, this lens is curved to process light waves traveling through air. But sea lions need to see their best at hundreds of meters deep. To accommodate, their eyes have a much rounder lens to refract light __________, as well as teardrop-shaped pupils which can expand to 25 times their original size. This lets in as much light as possible, helping them ________ their prey in even the _______ conditions.

Solution


  1. vision
  2. pinpoint
  3. light
  4. underwater
  5. dimmest
  6. humans
  7. sight

Original Text


Once they arrive at their hunting ground, sea lions depend on their superior vision to find their prey. Most mammal eyes have a structure called a lens– a transparent, convex structure whose shape refracts light to enable sight. In humans, this lens is curved to process light waves traveling through air. But sea lions need to see their best at hundreds of meters deep. To accommodate, their eyes have a much rounder lens to refract light underwater, as well as teardrop-shaped pupils which can expand to 25 times their original size. This lets in as much light as possible, helping them pinpoint their prey in even the dimmest conditions.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
sea lions 11
changing ocean 2


Important Words


  1. accommodate
  2. air
  3. arrive
  4. called
  5. conditions
  6. convex
  7. curved
  8. deep
  9. depend
  10. dimmest
  11. enable
  12. expand
  13. eyes
  14. find
  15. ground
  16. helping
  17. humans
  18. hundreds
  19. hunting
  20. lens
  21. lets
  22. light
  23. lions
  24. mammal
  25. meters
  26. original
  27. pinpoint
  28. prey
  29. process
  30. pupils
  31. refract
  32. refracts
  33. rounder
  34. sea
  35. shape
  36. sight
  37. size
  38. structure
  39. superior
  40. times
  41. transparent
  42. traveling
  43. underwater
  44. vision
  45. waves