Group of answer choices
Coal
Electricity
Oil
Gasoline
Flag question: Question 2
Question 21 pts
Some of the most important advances in technology happened in the steel industry. Steel is iron that has been made stronger by heat and the addition of other metals. In the mid-1850s Henry Bessemer invented the Bessemer process, a way to manufacture steel quickly and cheaply by blasting hot air through melted iron to quickly remove impurities. Before, turning several tons of iron ore into steel took a day or more. The Bessemer process took only 10 to 20 minutes.
The Bessemer process dramatically changed the steel industry because it decreased the __________________ to produce steel.
Group of answer choices
Materials & supplies
Time & cost
Energy & byproducts
Transportation & workers
Flag question: Question 3
Question 31 pts
Thomas Edison on Invention
“I do not regard myself as a pure scientist, as so many persons have insisted that I am. I do not search for the laws of nature . . . for the purpose of learning truth. I am only a professional inventor . . . with the object [goal] of inventing that which will have commercial utility [use].”
What were Edison’s goals with his inventions?
Group of answer choices
to learn more about the laws of nature
to be regarded as a true scientist
to have more patents than anyone
to build something that would be useful to people
1 answer
Here are the answers to your questions based on historical context:
During the 2nd Industrial Revolution, Electricity replaced steam & water as the main source of energy.
The Bessemer process dramatically changed the steel industry because it decreased the Time & cost to produce steel.
Edison's goals with his inventions were to build something that would be useful to people.
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