full transcript
"From the Ted Talk by James Green: 3 moons and a planet that could have alien life"

Unscramble the Blue Letters

And so about 15 years ago, we started a seiers of missions to go to Mars and see if water existed on Mars in its past that changed its geology. We ought to be able to notice that. And indeed we started to be sieursrpd right away. Our higher resolution images show deltas and river valleys and gulleys that were there in the past. And in fact, cuitroisy — which has been rvoing on the surface now for about three years — has really shown us that it's sitting in an ancient river bed, where water foelwd ralipdy. And not for a little while, perhaps hundreds of millions of years. And if everything was there, including organics, perhaps life had started.

Open Cloze

And so about 15 years ago, we started a ______ of missions to go to Mars and see if water existed on Mars in its past that changed its geology. We ought to be able to notice that. And indeed we started to be _________ right away. Our higher resolution images show deltas and river valleys and gulleys that were there in the past. And in fact, _________ — which has been ______ on the surface now for about three years — has really shown us that it's sitting in an ancient river bed, where water ______ _______. And not for a little while, perhaps hundreds of millions of years. And if everything was there, including organics, perhaps life had started.

Solution

  1. rapidly
  2. curiosity
  3. surprised
  4. flowed
  5. roving
  6. series

Original Text

And so about 15 years ago, we started a series of missions to go to Mars and see if water existed on Mars in its past that changed its geology. We ought to be able to notice that. And indeed we started to be surprised right away. Our higher resolution images show deltas and river valleys and gulleys that were there in the past. And in fact, Curiosity — which has been roving on the surface now for about three years — has really shown us that it's sitting in an ancient river bed, where water flowed rapidly. And not for a little while, perhaps hundreds of millions of years. And if everything was there, including organics, perhaps life had started.

ngrams of length 2

collocation frequency
solar system 9
liquid water 6
hydrothermal vents 5

Important Words

  1. ancient
  2. bed
  3. changed
  4. curiosity
  5. deltas
  6. existed
  7. fact
  8. flowed
  9. geology
  10. gulleys
  11. higher
  12. hundreds
  13. images
  14. including
  15. life
  16. mars
  17. millions
  18. missions
  19. notice
  20. organics
  21. rapidly
  22. resolution
  23. river
  24. roving
  25. series
  26. show
  27. shown
  28. sitting
  29. started
  30. surface
  31. surprised
  32. valleys
  33. water
  34. years