Inventions What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869? Blender Electric mixer Vacuum cleaner Washing machine Blender Electric mixer Vacuum cleaner Washing machine ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention caused many deaths while testing it? Ladders Race cars Dynamite Parachute Ladders Race cars Dynamite Parachute ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Gunpowder? Leo H Baekeland Sir Frank Whittle Roger Bacon G. Ferdinand Von Zeppelin Leo H Baekeland Sir Frank Whittle Roger Bacon G. Ferdinand Von Zeppelin ANSWER DOWNLOAD EXAMIANS APP
Inventions What African-American inventor received 5 patents in the field of shoemaking? Elijah McCoy Ernest Just Jan Ernst Matzeliger Lewis Latimer Elijah McCoy Ernest Just Jan Ernst Matzeliger Lewis Latimer 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? Leslie R. Groves Vannevar Bush James B. Conant Robert Oppenheimer Leslie R. Groves Vannevar Bush James B. Conant Robert Oppenheimer ANSWER DOWNLOAD EXAMIANS APP
Inventions What Sir Isaac Newton invented? Spectacles Chronometer Microscope Reflecting telescope Spectacles Chronometer Microscope Reflecting telescope ANSWER DOWNLOAD EXAMIANS APP
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