INVENTIONS (Group 8)

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Across
  1. 3. What Enrico Fermi invented in 1942?
  2. 5. What is called "the elixir of the 20th century” was created in 1928?
  3. 7. The name of the counting machine using rods of beads in a box was invented about 2500 years ago.
Down
  1. 1. Which of the following was first patented by an Australian in 1889?
  2. 2. This is an instrument that makes distant objectives appear bigger.
  3. 4. On November 29, 1877, Thomas Edison introduced to the public his first invention,…….
  4. 6. A…always points north and is used to find direction.
  5. 8. …… were used to drain mines and fill canals in the 17th century.