inventor, is someone whose job is inventing new things., generator, is something which produces electricity., propeller, is something which goes round and round to make something move., scientist, is a person who studies or works in science., Hydroelectric power, is electricity that is produced from fast-moving water., device, is a tool or small machine invented for a particular purpose., prototype, is the first model of a new invention.

U7 PROFESSIONS WITH DEFINATIONS

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