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S.S. Vocab Section 1
Social Studies Vocab
Term | Definition |
---|---|
petroleum | A liquid mixture that can be extracted from rocks to make fuels. |
Bessemer Steel Process | The first inexpensive industrial process to mass-produce steel. |
generator | A machine that converts mechanical energy into electricity. |
Thomas Edison | Invented many things including practical electric lighting. |
Alexander Graham Bell | Invented the telephone. |
patent | A document giving an inventor rights to make and sell their inventions. |
business cycle | A pattern of good and bad times. |
Centennial Exhibition | An exhibition in Philadelphia celebrating America's 100th birthday. |