Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Giuseppe Mercalli Hiram Walker Joshua Rumble Charles Richter Giuseppe Mercalli Hiram Walker Joshua Rumble Charles Richter ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1960s 1980s 1950s 1970s 1960s 1980s 1950s 1970s ANSWER DOWNLOAD EXAMIANS APP
Inventions It travels over land and water. Who invented the HOVERCRAFT? T. Henman C. Cockerell S. Sperrow O. Stricheg T. Henman C. Cockerell S. Sperrow O. Stricheg ANSWER DOWNLOAD EXAMIANS APP
Inventions Where was the yo-yo invented? United States Philippines France England United States Philippines France England ANSWER DOWNLOAD EXAMIANS APP
Inventions When were blue jeans invented? 1900s 1870s 1850s 1860s 1900s 1870s 1850s 1860s ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Diner's Club MasterCharge Visa Discover Diner's Club MasterCharge Visa Discover ANSWER DOWNLOAD EXAMIANS APP
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