science (hint=you have to put / after you answer a question)

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Across
  1. 5. heat moving from place to place (easy)
  2. 6. heat transfer (mid)
  3. 7. doesn't transfer heat (easy)
Down
  1. 1. heat movement (easy)
  2. 2. a shorter way of saying words (mid)
  3. 3. direct heat (easy)
  4. 4. when something overflows (hard)