Across
- 5. a drug that inhibits pain during surgery
- 8. English scientist; he proposed the theory of evolution through natural selection, which came to be known as Darwinism.
- 10. the process of heating liquids to kill bacteria and prevent fermentation
- 12. Italian physicist; he experimented with wireless telegraphy and established communication across the English Channel between France and England.
- 13. American theoretical physicist; he developed the theory of relativity among his many scientific theories and was awarded the Nobel Prize for physics in 1921.
Down
- 1. a machine perfected by Samuel F. B. Morse in 1832; it uses pulses of electric current to send messages across long distances through wires
- 2. English scientist; he invented the dynamo—a machine that generated electricity. His invention eventually led to today’s electrical generators.
- 3. American business leader; he revolutionized factory production through use of the assembly line and popularized the affordable automobile (Model T).
- 4. American artist and inventor; he applied scientists’ discoveries of electricity and magnetism to develop the telegraph.
- 6. a process developed in the 1850s that led to faster, cheaper steel production
- 7. a process in which certain elements constantly break down and release energy
- 9. French chemist; his experiments with bacteria disproved the theory of spontaneous generation and led to the germ theory of infection. He also developed vaccines for anthrax and rabies.
- 11. American inventor of over 1,000 patents, including the light bulb; he established a power plant that supplied electricity to parts of New York City.