Inventions What African-American inventor received 5 patents in the field of shoemaking? Ernest Just Jan Ernst Matzeliger Elijah McCoy Lewis Latimer Ernest Just Jan Ernst Matzeliger Elijah McCoy Lewis Latimer ANSWER DOWNLOAD EXAMIANS APP
Inventions What device for new parents did Ann Moore invent in 1969? Infant carrier Bottle warmer Disposable diaper Baby monitor Infant carrier Bottle warmer Disposable diaper Baby monitor ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the Seed Drill? Woodie Guthrie Arlo Guthrie Jethro Tull Thomas Hines Woodie Guthrie Arlo Guthrie Jethro Tull Thomas Hines ANSWER DOWNLOAD EXAMIANS APP
Inventions What Benjamin Franklin invented? Hygrometer Barometer Radio Bifocal spectacles Hygrometer Barometer Radio Bifocal spectacles ANSWER DOWNLOAD EXAMIANS APP
Inventions What Frank Whittle invented? Ethyl gasoline Radar Sonar Jet propulsion Ethyl gasoline Radar Sonar Jet propulsion 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? James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush ANSWER DOWNLOAD EXAMIANS APP
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