full transcript
From the Ted Talk "Garik Israelian: How spectroscopy could reveal alien life"

Unscramble the Blue Letters

This is the spectrum of the Sun — 24,000 cperalst lines, and about 15 percent of these lines is not yet identified. It is amazing. So we are in the 21st century, and we still cannot properly understand the rmuctpse of the sun. Sometimes we have to deal with just one iynt, weak spectral line to maeurse the composition of that chemical element in the atmosphere. For instance, you see the spectral line of the gold is the only spectral line in the spectrum of the Sun. And we use this weak feature to measure the oopomitsnci of gold in the atmosphere of the Sun.

Open Cloze

This is the spectrum of the Sun — 24,000 ________ lines, and about 15 percent of these lines is not yet identified. It is amazing. So we are in the 21st century, and we still cannot properly understand the ________ of the sun. Sometimes we have to deal with just one ____, weak spectral line to _______ the composition of that chemical element in the atmosphere. For instance, you see the spectral line of the gold is the only spectral line in the spectrum of the Sun. And we use this weak feature to measure the ___________ of gold in the atmosphere of the Sun.

Solution

  1. spectral
  2. spectrum
  3. composition
  4. tiny
  5. measure

Original Text

This is the spectrum of the Sun — 24,000 spectral lines, and about 15 percent of these lines is not yet identified. It is amazing. So we are in the 21st century, and we still cannot properly understand the spectrum of the sun. Sometimes we have to deal with just one tiny, weak spectral line to measure the composition of that chemical element in the atmosphere. For instance, you see the spectral line of the gold is the only spectral line in the spectrum of the Sun. And we use this weak feature to measure the composition of gold in the atmosphere of the Sun.

ngrams of length 2

collocation frequency
chemical elements 7
extrasolar planets 5
planet host 4
spectral line 3
sound waves 3
chemical composition 3

Important Words

  1. amazing
  2. atmosphere
  3. century
  4. chemical
  5. composition
  6. deal
  7. element
  8. feature
  9. gold
  10. identified
  11. instance
  12. line
  13. lines
  14. measure
  15. percent
  16. properly
  17. spectral
  18. spectrum
  19. sun
  20. tiny
  21. understand
  22. weak