Exercise 1

Question 46 :

For what does the world owe Almon Strowger a debt of gratitude?

A). Parking Meters
B). Vending Machines
C). Automatic Telephone Exchanges
D). Traffic Lights
Answer : Option C

Explanation :

He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work!

Question 47 :

Who is often called the 'first African-American' inventor?

A). Bessie Blount
B). George Washington Carver
C). Benjamin Banneker
D). Elijah McCoy
Answer : Option C

Explanation :

Banneker was a member of the planning committee that designed Washington, DC along with Pierre L'Enfant. When L'Enfant was fired Banneker recreated the plans from memory.

Question 48 :

The first hand glider was designed by...?

A). Leonardo DaVinci
B). The Wright brothers
C). Francis Rogallo
D). Galileo
Answer : Option A

Question 49 :

In which decade was the telegraph invented?

A). 1810s
B). 1840s
C). 1870s
D). 1890s
Answer : Option B

Explanation :

On May 24, 1844, Samuel Morse send his famous message, "What hath God wrought?"

Question 50 :

What inspired reflecting road lights to be invented?

A). Car door reflecting mirrors
B). The light a cat's eyes gave off on a fence
C). Sun light on steel posts on road sides
D). The sun light on the windshield
Answer : Option B

Explanation :

In 1933, Englishman Percy Shaw was driving home when he saw a cat's eyes reflecting. He had been headed straight towards a fence with the cat on it, but on the other side was a drop of hundreds of feet.