Chapter 1 Section 1_2_2 to 1_4

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Across
  1. 4. Technological change is faster now! Some people say that the world's body of knowledge is now doubling every 4 years.
  2. 6. is the period which continues today! Inventions become increasingly focused on electronics and computers.
  3. 7. is a difficult decision that a person has to make about whether something is right or wrong.
  4. 8. invented in 1837, allowed people to send short written messages.
Down
  1. 1. means "having to do with right and wrong."
  2. 2. combines the engine of a conventional vehicle with the battery and electric motor of an electrical vehicle.
  3. 3. developed in 1947. The _________ was invented using a piece of semiconducting material and some wires. __________ were soon combined into integrated circuits. They were used in Televisions, Radios and eventually into Computers.
  4. 5. people make goods using machines rather than by hand.