Question 2 of 11

Which electrifying genius came up with the idea of alternating current?

... Nikola Tesla proposed alternating current, which put him in competition with Thomas Edison's direct current technology.

Question 3 of 11

Who was the recipient of the first telephone call made by Alexander Graham Bell?

... Bell's assistant Thomas Watson received the first message via telephone. The historical first words were "Mr. Watson, come here. I need you."

Question 4 of 11

Which inventor famously quoted the biblical phrase "What hath God wrought?"

... Samuel Morse tapped out this phrase in the world's first telegraph message using a code he invented.

Question 5 of 11

Which of these inventive women came up with the idea for Liquid Paper?

... Bette Nesmith-Graham wasn't just the mother of Monkees vocalist Michael Nesmith, she was also the inventor of Liquid Paper.

Question 6 of 11

All inventors have their ups and downs -- which of these invented the yo-yo as a toy?

... Pedro Flores is the man to thank whether you enjoy walking the dog, rocking the baby in the cradle or taking a trip around the world. He introduced the mass-market toy version of the yo-yo in the early 20th century.

Question 7 of 11

Narciso Monturiol invented a device that revolutionized warfare. What was it?

... Monturiol invented the combustion-driven submarine in 1867. Monturiol's submarine was the first submersible vehicle that didn't require human or air power for propulsion.

Question 8 of 11

Who invented the semi-automatic shotgun?

... John Moses Browning came up with the idea for the semi-automatic shotgun.

Question 9 of 11

Who do we thank for inventing a vaccine against Polio?

... Dr. Jonas Salk developed a vaccine against Polio in the 1950s. Because he wanted it distributed freely to as many people as possible, he never patented his vaccine.

Question 10 of 11

What did Willis Carrier invent that has made life more pleasant for millions of people?

... Those of you living in hot climates may want to say thanks to Carrier for inventing air conditioning.

Question 11 of 11

Which of these inventors' discoveries led to the creation of Kevlar?

... Stephanie Kwolek developed a liquid crystalline polymer solution that displayed remarkable qualities of strength and stiffness. This lead to the development of Kevlar, a tough material used in many kinds of body armor.

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