1. Progress in the 19 th Century Chapter 10, Section 4

2. Inventions Make Life Easier Thomas Edison patents light bulb Alexander Graham Bell - telephone

3. Transportation Innovations 1880s, Germans invent first car Henry Ford lowers cost with interchangeable parts and assembly line—one task per worker Video Wright brothers develop first airplane

4. New Ideas in Medicine Louis Pasteur discovers existence of bacteria while observing fermentation – Also learns heat kills bacteria – Develops pasteurization process – He quickly discovers that bacteria cause disease

5. British surgeon Joseph Lister links bacteria to surgical problems Sterilizing instruments reduces deaths from infection Sterile Surgical Techniques Sterile Surgical Techniques Cities improve sanitation

6. DISCLAIMER

7. New Ideas in Science Charles Darwin Challenges Creationism Darwin introduces – Natural Selection – Survival of the Fittest Theory of evolution—species change slowly over very very long periods of time through natural selection

8. Video

10. GENETICS Gregor Mendel discovers patterns to inherited traits

11. created by Dmitri Mendeleev

12. Radioactivity Discovered by Marie & Pierre Curie Used to treat cancer, X-rays Video

13. Psychology Ivan Pavlov & his dogs – Pavlov Theory Pavlov Theory Sigmund Freud – Dreams and the subconscious