Across
- 2. 1837, John _________ invented a steel plow that efficiently turned the hard and heavy prairie soil found on the Great Plains.
- 3. The ______________ jenny was a hand-powered machine that could easily spin cotton into thread. It was invented by a British carpenter and weaver in 1764
- 4. The McCormick __________ made it easier for farmers to harvest their crops. It was invented by Cyrus McCormick and Jo Anderson, a slave.
- 5. The first ________-powered locomotive in the United States was the Tom Thumb, built for the Baltimore and Ohio Railroad in 1829 by Peter Cooper, an American industrialist and inventor. Known as the "iron horse."
- 6. ________ Morse was an American inventor and painter who is most often associated with the invention of the single-wire telegraph. Created his own code, known as Morse code, to send messages through his invention.
Down
- 1. Eli _____________ invented the cotton gin in 1793. Prior to this invention, cotton was cleaned by hand, and the process of separating the seeds from the fibers was very time consuming.
- 2. Before the use of __________________ parts, many types of goods were custom made, and it was quite difficult to make repairs if something broke. When people began using parts that were the same, people could simply change a single part that needed to be replaced instead of having to repair the entire machine or object.
- 3. In 1807, Robert Fulton built and launched the first ____________, called the Clermont, on the Hudson River.