full transcript

From the Ted Talk by Bill Gross: A solar energy system that tracks the sun

Unscramble the Blue Letters

I tried to figure out — maybe solar's become attractive. It's been 25 years since I was doing this, let me go back and look at what's been hpneinapg with sloar cells. And the price had gone down from 10 dollars a watt to about four or five dollars a watt, but it stabilized. And it needed to get much lower to be cost-effective. I studied all the new things that had happened in solar clels, and was looking for ways we could make solar cells more inexpensively. A lot of new things are happening to do that, but fundamentally, the process requires a tremendous anmout of egreny. Some people say it takes more energy to make a solar cell than it will give out in its entire life. If we ruedce the amount of energy it takes to make the cells, that will become more practical.

Open Cloze

I tried to figure out — maybe solar's become attractive. It's been 25 years since I was doing this, let me go back and look at what's been _________ with _____ cells. And the price had gone down from 10 dollars a watt to about four or five dollars a watt, but it stabilized. And it needed to get much lower to be cost-effective. I studied all the new things that had happened in solar _____, and was looking for ways we could make solar cells more inexpensively. A lot of new things are happening to do that, but fundamentally, the process requires a tremendous ______ of ______. Some people say it takes more energy to make a solar cell than it will give out in its entire life. If we ______ the amount of energy it takes to make the cells, that will become more practical.

Solution

  1. happening
  2. solar
  3. energy
  4. cells
  5. reduce
  6. amount

Original Text

I tried to figure out — maybe solar's become attractive. It's been 25 years since I was doing this, let me go back and look at what's been happening with solar cells. And the price had gone down from 10 dollars a watt to about four or five dollars a watt, but it stabilized. And it needed to get much lower to be cost-effective. I studied all the new things that had happened in solar cells, and was looking for ways we could make solar cells more inexpensively. A lot of new things are happening to do that, but fundamentally, the process requires a tremendous amount of energy. Some people say it takes more energy to make a solar cell than it will give out in its entire life. If we reduce the amount of energy it takes to make the cells, that will become more practical.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
solar energy 6
stirling engine 5
solar cells 5
genetic algorithms 4
genetic algorithm 4
hot air 4
robert stirling 4
energy crisis 3
solar cell 3
collect light 3
air engine 3
internal combustion 3
hot water 3
stirling engines 2
ibm pc 2
battery backup 2
inexpensive microprocessors 2
intractable problems 2
natural selection 2
moving parts 2
sunlight strikes 2
convert sunlight 2
steam engines 2
engine works 2
piston moves 2
heat engine 2
hot cap 2
highest temperature 2

ngrams of length 3

collocation frequency
hot air engine 3

Important Words

  1. amount
  2. attractive
  3. cell
  4. cells
  5. dollars
  6. energy
  7. entire
  8. figure
  9. fundamentally
  10. give
  11. happened
  12. happening
  13. inexpensively
  14. life
  15. lot
  16. needed
  17. people
  18. practical
  19. price
  20. process
  21. reduce
  22. requires
  23. solar
  24. stabilized
  25. studied
  26. takes
  27. tremendous
  28. watt
  29. ways
  30. years