Social Studies. Lesson 1.

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Across
  1. 2. Invented the simple box camera.
  2. 4. It was used to receive news in the early 1900s.
  3. 7. Explained that all human behavior is a response of the nervous system to stimuli from the world that a person lives in.
  4. 8. He fought for the independence of Cuba
  5. 9. Polish-born French physicist, famous for her work on radioactivity and twice a winner of the Nobel Prize.
  6. 10. Developed the theory of evolution to explain why things change over time.
Down
  1. 1. Country where the US built a canal.
  2. 3. Developed the wireless telegraph.
  3. 5. He implemented the use of the Assembly line to car's production.
  4. 6. Lastname of the Captain that propose the expansion of the US Navy.
  5. 8. He pioneered the science of genetics by studying pea plants in the 1800s.