full transcript

From the Ted Talk by James Spann: How do tornadoes form?

Unscramble the Blue Letters


When all these things are in pcale, a vrotex can develop enclosed by the storm, and fnmriog a wide, tall tube of sipnning air that then gets pulled upwards. We call this a mesocyclone. Outside, cool, dry, sinking air starts to wrap around the back of this mesocyclone, forming what’s known as a rear flank downdraft. This unusual scenario cetreas a sartk temperature dcnffireee between the air inside the mesocyclone, and the air outside, building up a level of instability that allows a tadnoro to thrive. Then, the mesocyclone's lower part becomes thteigr, increasing the speed of the wind. If, and that's a big if, this funnel of air moves down into that large, moist cloud base at the bottom of the parent storm, it sucks it in and turns it into a rtontiag wall of cloud, forming a link between the sortm that created it and the Earth. The second that tube of spinning cloud touches the ground, it becomes a tornado.

Open Cloze


When all these things are in _____, a ______ can develop enclosed by the storm, and _______ a wide, tall tube of ________ air that then gets pulled upwards. We call this a mesocyclone. Outside, cool, dry, sinking air starts to wrap around the back of this mesocyclone, forming what’s known as a rear flank downdraft. This unusual scenario _______ a _____ temperature __________ between the air inside the mesocyclone, and the air outside, building up a level of instability that allows a _______ to thrive. Then, the mesocyclone's lower part becomes _______, increasing the speed of the wind. If, and that's a big if, this funnel of air moves down into that large, moist cloud base at the bottom of the parent storm, it sucks it in and turns it into a ________ wall of cloud, forming a link between the _____ that created it and the Earth. The second that tube of spinning cloud touches the ground, it becomes a tornado.

Solution


  1. place
  2. creates
  3. rotating
  4. storm
  5. forming
  6. spinning
  7. tornado
  8. tighter
  9. vortex
  10. stark
  11. difference

Original Text


When all these things are in place, a vortex can develop enclosed by the storm, and forming a wide, tall tube of spinning air that then gets pulled upwards. We call this a mesocyclone. Outside, cool, dry, sinking air starts to wrap around the back of this mesocyclone, forming what’s known as a rear flank downdraft. This unusual scenario creates a stark temperature difference between the air inside the mesocyclone, and the air outside, building up a level of instability that allows a tornado to thrive. Then, the mesocyclone's lower part becomes tighter, increasing the speed of the wind. If, and that's a big if, this funnel of air moves down into that large, moist cloud base at the bottom of the parent storm, it sucks it in and turns it into a rotating wall of cloud, forming a link between the storm that created it and the Earth. The second that tube of spinning cloud touches the ground, it becomes a tornado.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
cloud base 2
temperature difference 2


Important Words


  1. air
  2. base
  3. big
  4. bottom
  5. building
  6. call
  7. cloud
  8. cool
  9. created
  10. creates
  11. develop
  12. difference
  13. downdraft
  14. dry
  15. earth
  16. enclosed
  17. flank
  18. forming
  19. funnel
  20. ground
  21. increasing
  22. instability
  23. large
  24. level
  25. link
  26. mesocyclone
  27. moist
  28. moves
  29. parent
  30. part
  31. place
  32. pulled
  33. rear
  34. rotating
  35. scenario
  36. sinking
  37. speed
  38. spinning
  39. stark
  40. starts
  41. storm
  42. sucks
  43. tall
  44. temperature
  45. thrive
  46. tighter
  47. tornado
  48. touches
  49. tube
  50. turns
  51. unusual
  52. vortex
  53. wall
  54. wide
  55. wind
  56. wrap