Inventions Who invented Gramophone? Sir Alexander Graham Bell Michael Faraday Thomas Alva Edison Fahrenheit Sir Alexander Graham Bell Michael Faraday Thomas Alva Edison Fahrenheit ANSWER DOWNLOAD EXAMIANS APP
Inventions What toy was invented by Joshua Lionel Cowen around 1900? Tinkertoys Yo-yo Raggedy Ann doll Electric train Tinkertoys Yo-yo Raggedy Ann doll Electric train ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the transistor invented? 1940s 1950s 1980s 1960s 1940s 1950s 1980s 1960s ANSWER DOWNLOAD EXAMIANS APP
Inventions 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? Robert Oppenheimer Vannevar Bush Leslie R. Groves James B. Conant Robert Oppenheimer Vannevar Bush Leslie R. Groves James B. Conant ANSWER DOWNLOAD EXAMIANS APP
Inventions What plaything was invented by Joe McVicker in 1956? Play-Doh Silly Putty Etch-A-Sketch Lite-Brite Play-Doh Silly Putty Etch-A-Sketch Lite-Brite ANSWER DOWNLOAD EXAMIANS APP
Inventions Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent? Banjo Oboe Clarinet Harmonium Banjo Oboe Clarinet Harmonium ANSWER DOWNLOAD EXAMIANS APP
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