full transcript

From the Ted Talk by Aaswath Raman: How we can turn the cold of outer space into a renewable resource

Unscramble the Blue Letters


Think about a pie conoilg on a window sill. For it to be able to cool down, its heat needs to flow somewhere cooler. Namely, the air that surrounds it. As implausible as it may sound, for that pool of waetr, its heat is actually flowing to the cold of space.

How is this possible? Well, that pool of water, like most natural materials, sends out its heat as light. This is a cpocnet known as thermal radiation. In fact, we're all sending out our heat as iarrnefd light right now, to each other and our surroundings. We can actually visualize this with teahrml cameras and the images they produce, like the ones I'm showing you right now. So that pool of water is sending out its heat upward towards the atmosphere. The aroptmhsee and the meluloecs in it absorb some of that heat and send it back. That's actually the greenhouse effcet that's responsible for climate change.

Open Cloze


Think about a pie _______ on a window sill. For it to be able to cool down, its heat needs to flow somewhere cooler. Namely, the air that surrounds it. As implausible as it may sound, for that pool of _____, its heat is actually flowing to the cold of space.

How is this possible? Well, that pool of water, like most natural materials, sends out its heat as light. This is a _______ known as thermal radiation. In fact, we're all sending out our heat as ________ light right now, to each other and our surroundings. We can actually visualize this with _______ cameras and the images they produce, like the ones I'm showing you right now. So that pool of water is sending out its heat upward towards the atmosphere. The __________ and the _________ in it absorb some of that heat and send it back. That's actually the greenhouse ______ that's responsible for climate change.

Solution


  1. effect
  2. infrared
  3. molecules
  4. concept
  5. cooling
  6. thermal
  7. atmosphere
  8. water

Original Text


Think about a pie cooling on a window sill. For it to be able to cool down, its heat needs to flow somewhere cooler. Namely, the air that surrounds it. As implausible as it may sound, for that pool of water, its heat is actually flowing to the cold of space.

How is this possible? Well, that pool of water, like most natural materials, sends out its heat as light. This is a concept known as thermal radiation. In fact, we're all sending out our heat as infrared light right now, to each other and our surroundings. We can actually visualize this with thermal cameras and the images they produce, like the ones I'm showing you right now. So that pool of water is sending out its heat upward towards the atmosphere. The atmosphere and the molecules in it absorb some of that heat and send it back. That's actually the greenhouse effect that's responsible for climate change.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
cooling systems 4
cooling system 4
air temperature 4
degrees celsius 3
greenhouse gas 3
degrees fahrenheit 2
air conditioner 2
refrigeration systems 2
gas emissions 2
climate change 2
thermal radiation 2
infrared light 2
cooling effect 2
length scales 2
save energy 2
cold darkness 2
solar cells 2

ngrams of length 3

collocation frequency
greenhouse gas emissions 2

Important Words


  1. absorb
  2. air
  3. atmosphere
  4. cameras
  5. change
  6. climate
  7. cold
  8. concept
  9. cool
  10. cooler
  11. cooling
  12. effect
  13. fact
  14. flow
  15. flowing
  16. greenhouse
  17. heat
  18. images
  19. implausible
  20. infrared
  21. light
  22. materials
  23. molecules
  24. natural
  25. pie
  26. pool
  27. produce
  28. radiation
  29. responsible
  30. send
  31. sending
  32. sends
  33. showing
  34. sill
  35. sound
  36. space
  37. surroundings
  38. surrounds
  39. thermal
  40. upward
  41. visualize
  42. water
  43. window