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  • Question
  • What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?


  • Options
  • A. Charles Richter
  • B. Hiram Walker
  • C. Giuseppe Mercalli
  • D. Joshua Rumble

  • Correct Answer
  • Charles Richter 

    Explanation
    Richter was born on an Ohio farm in 1900. He died in 1985.

  • Inventions problems


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    • 1. The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?

    • Options
    • A. Robert Oppenheimer
    • B. James B. Conant
    • C. Leslie R. Groves
    • D. Vannevar Bush
    • Discuss
    • 2. This English inventor is known as the 'Father of Computing.'

    • Options
    • A. Philo Farnsworth
    • B. J. Presper Eckert
    • C. John Mauchly
    • D. Charles Babbage
    • Discuss
    • 3. What Thomas Davenport invented?

    • Options
    • A. Screw propellor
    • B. Electric streetcar
    • C. Chesterfield
    • D. Sleeping (railway) car
    • Discuss
    • 4. Who invented Gramophone?

    • Options
    • A. Michael Faraday
    • B. Fahrenheit
    • C. Sir Alexander Graham Bell
    • D. Thomas Alva Edison
    • Discuss
    • 5. Who invented the BALLPOINT PEN?

    • Options
    • A. Biro Brothers
    • B. Waterman Brothers
    • C. Bicc Brothers
    • D. Write Brothers
    • Discuss
    • 6. In which year was MIDI introduced?

    • Options
    • A. 1987
    • B. 1983
    • C. 1973
    • D. 1977
    • Discuss
    • 7. Who invented Gunpowder?

    • Options
    • A. G. Ferdinand Von Zeppelin
    • B. Sir Frank Whittle
    • C. Roger Bacon
    • D. Leo H Baekeland
    • Discuss
    • 8. When was Monopoly created?

    • Options
    • A. 1940s
    • B. 1930s
    • C. 1920s
    • D. 1950s
    • Discuss
    • 9. For what is Charles Babbage (1792-1871) remembered?

    • Options
    • A. Computers
    • B. Telescopes
    • C. Radio-Telegraphy
    • D. Steam Boating
    • Discuss
    • 10. Where was the yo-yo invented?

    • Options
    • A. France
    • B. United States
    • C. Philippines
    • D. England
    • Discuss


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