full transcript
"From the Ted Talk by Lucianne Walkowicz: Look up for a change"

Unscramble the Blue Letters

To understand why, all you really have to do is think about the shape of a lglthibub. The lightbulb, for all practical purposes, is more or less round. This is great for its original intended purpose of lighting up the indoors. You turn it on, lgiht goes everywhere. An individual light bulb can light up your whole room, more or less. Now, that's great if you're lighting the indoors, but in its application in outdoor lighting, that traditional shape of the light bulb, the sort of globe that spreads light everywhere, is actually very inefficient. When you're outdoors, mostly what you care about is lighting the ground beneath you and your immediate surroundings. All of that light that gets srtaceted ortwdaus and upwards doesn't actually help you light the area around you. What it does is scatters up into the sky and becomes what we call "light pllotouin." Even if you don't care anything about stargazing, this should worry you, because it means that 60-70% of the energy we use to light the oudtroos is wtesad by blotting out the stars.

Open Cloze

To understand why, all you really have to do is think about the shape of a _________. The lightbulb, for all practical purposes, is more or less round. This is great for its original intended purpose of lighting up the indoors. You turn it on, _____ goes everywhere. An individual light bulb can light up your whole room, more or less. Now, that's great if you're lighting the indoors, but in its application in outdoor lighting, that traditional shape of the light bulb, the sort of globe that spreads light everywhere, is actually very inefficient. When you're outdoors, mostly what you care about is lighting the ground beneath you and your immediate surroundings. All of that light that gets _________ ________ and upwards doesn't actually help you light the area around you. What it does is scatters up into the sky and becomes what we call "light _________." Even if you don't care anything about stargazing, this should worry you, because it means that 60-70% of the energy we use to light the ________ is ______ by blotting out the stars.

Solution

  1. lightbulb
  2. light
  3. scattered
  4. outwards
  5. outdoors
  6. wasted
  7. pollution

Original Text

To understand why, all you really have to do is think about the shape of a lightbulb. The lightbulb, for all practical purposes, is more or less round. This is great for its original intended purpose of lighting up the indoors. You turn it on, light goes everywhere. An individual light bulb can light up your whole room, more or less. Now, that's great if you're lighting the indoors, but in its application in outdoor lighting, that traditional shape of the light bulb, the sort of globe that spreads light everywhere, is actually very inefficient. When you're outdoors, mostly what you care about is lighting the ground beneath you and your immediate surroundings. All of that light that gets scattered outwards and upwards doesn't actually help you light the area around you. What it does is scatters up into the sky and becomes what we call "light pollution." Even if you don't care anything about stargazing, this should worry you, because it means that 60-70% of the energy we use to light the outdoors is wasted by blotting out the stars.

ngrams of length 2

collocation frequency
night sky 5
dark night 5
citizen science 5
galaxy zoo 4
space telescope 3
planet hunters 3

ngrams of length 3

collocation frequency
dark night sky 4

Important Words

  1. application
  2. area
  3. beneath
  4. blotting
  5. bulb
  6. call
  7. care
  8. energy
  9. globe
  10. great
  11. ground
  12. individual
  13. indoors
  14. inefficient
  15. intended
  16. light
  17. lightbulb
  18. lighting
  19. means
  20. original
  21. outdoor
  22. outdoors
  23. outwards
  24. pollution
  25. practical
  26. purpose
  27. purposes
  28. room
  29. scattered
  30. scatters
  31. shape
  32. sky
  33. sort
  34. spreads
  35. stargazing
  36. stars
  37. surroundings
  38. traditional
  39. turn
  40. understand
  41. wasted
  42. worry