Across
- 5. interchangeable parts __ assembly and repair in factories.
- 7. This came to dominate as the source of industrial power
- 9. Factories required large amounts of __ and power-driven machines to mass-produce goods.
- 11. The invention of the lightbulb made the pace of life and production quicken; factories did this after dark.
- 14. Thomas Edison's invention of the lightbulb illuminated cities, called the "__ lamp."
- 15. To the inventor's dismay, dynamite was used in warfare, but also in __.
Down
- 1. The United States built the transcontinental railroad, transporting people from the Atlantic to the __.
- 2. Steel is harder, lighter, and more __ than iron ore
- 3. railroads __ inland cities and seaports, mining regions and industrial centers.
- 4. Advancements in chemistry led to the invention of soaps, perfumes, and __ that immensely helped people feel better.
- 6. Steel is purified __ (2 words, no space)
- 8. chemical fertilizers increased the production of __
- 10. This purified version of iron ore became the material to build bridges,__, and tools.
- 12. This was invented in 1800
- 13. the assembly line not only made production cheaper, but also __, lowering the price of goods.