full transcript
From the Ted Talk "Elizabeth Cox: Is fire a solid, a liquid, or a gas?"

Unscramble the Blue Letters

Sitting around a campfire, you can feel its heat, smell the dwyoo smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could trsea at the bright flames forever as they twist and flicker in nesesld incarnations. But what exactly are you looking at? The flames are obviously not solid, nor are they uilidq. Mingling with the air, they’re more like a gas, but more visible—and more fleeting. And on a scientific evlel, fire fsrfdie from gas because gases can exist in the same state indefinitely while fires always burn out eventually.

Open Cloze

Sitting around a campfire, you can feel its heat, smell the _____ smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could _____ at the bright flames forever as they twist and flicker in _______ incarnations. But what exactly are you looking at? The flames are obviously not solid, nor are they ______. Mingling with the air, they’re more like a gas, but more visible—and more fleeting. And on a scientific _____, fire _______ from gas because gases can exist in the same state indefinitely while fires always burn out eventually.

Solution

  1. stare
  2. liquid
  3. level
  4. differs
  5. woody
  6. endless

Original Text

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twist and flicker in endless incarnations. But what exactly are you looking at? The flames are obviously not solid, nor are they liquid. Mingling with the air, they’re more like a gas, but more visible—and more fleeting. And on a scientific level, fire differs from gas because gases can exist in the same state indefinitely while fires always burn out eventually.

Important Words

  1. air
  2. bright
  3. burn
  4. burns
  5. campfire
  6. close
  7. crackle
  8. differs
  9. endless
  10. eventually
  11. exist
  12. eyes
  13. feel
  14. fire
  15. fires
  16. flames
  17. fleeting
  18. flicker
  19. gas
  20. gases
  21. hear
  22. heat
  23. incarnations
  24. indefinitely
  25. level
  26. liquid
  27. mingling
  28. nostrils
  29. scientific
  30. sitting
  31. smell
  32. smoke
  33. solid
  34. stare
  35. state
  36. stings
  37. twist
  38. woody