Jeopardy! Round, Double Jeopardy! Round, or Tiebreaker Round clues (5 results returned)
| #8123, aired 2019-12-25 | A POWER CALLER $200: Give partially decayed plant matter called peat a few million years & it'll form this ignitable rock coal |
| #8123, aired 2019-12-25 | A POWER CALLER $400: 10 years ago, it cost about $50,000 to install a system to power your house using this energy; now, a 6-kw system could go for $14K solar |
| #8123, aired 2019-12-25 | A POWER CALLER $600: The Arizona-Nevada power plant at this 1,244'-long hydroelectric structure has a 2,080-megawatt capacity the Hoover Dam |
| #8123, aired 2019-12-25 | A POWER CALLER $800: At 97, John Goodenough is the oldest Nobel Prize winner, for work on these batteries with a hyphenated name in laptops & phones lithium-ion |
| #8123, aired 2019-12-25 | A POWER CALLER $1000: By 1880 the refining of around 90% of all U.S.-produced oil was controlled by this mega-company Standard Oil |
Final Jeopardy! Round clues (0 results returned)
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