1. Baltimore Polytechnic Institute October 3, 2011 U.S. History Mr. Green

2. The students will evaluate the changes in which people lived and worked by describing the impact the inventions of the late 19 th and early 20 th century had on people Warm-up Question: Review the timeline on pages 248- 249 and answer the following 1. What energy source made most inventions in the 1870’s possible? 2. Do you think that the title “Technological Explosion” is a good title for this timeline? Why or why not? Motivation: How would you strike it rich quick? What are some ways people can strike it rich, besides winning the lottery?

3. Natural Resources Fuel Industrialization U.S. still primarily an agrarian economy following the Civil War By 1920 the U.S. became the leading industrial power in the world Black Gold Native Americans used crude oil long before Europeans Cleveland/Pittsburg became refining locations to make kerosene from oil Gasoline was a by-product that was initially discarded until the automobile

4. Bessemer Steel process iron rusts and has other elements in it such as carbon dioxide Removing the carbon dioxide from iron makes steel Replaced by the open-hearth in 1886 Assignment: Identify 5 uses for steel in the late 19 th century. Page 247-248

5. The power of electricity Thomas Edison established world’s 1 st research lab at Menlo Park, NJ Harnessing of electricity changed the nature of business Electric street cars made transportation and living less expensive Assignment: Create a chart of inventors and identify their invention.

6. Women made up 40% of clerical workers by 1910 Sewing machine Some workers lost power in the workplace but gained power as a consumer-What does this mean?

7. What components are required for industrialization to occur. Organize your responses as shown: Industry

8. Read Chapter 6 Section 2 Prepare for 10 Question Quiz over Chapter 6 Section 1 and 2 Complete Chapter 6 Vocabulary