[{"question":"Kedy zdroje zvuku vyd\u00e1vaj\u00fa zvuk?","answers":["ke\u010f kmitaj\u00fa","ke\u010f sa zohrievaj\u00fa","ke\u010f nimi prech\u00e1dza elektrick\u00fd pr\u00fad","ke\u010f lietaj\u00fa"],"correct":"ke\u010f kmitaj\u00fa","order":"1"},{"question":"\u010co nie je zdrojom zvuku?","answers":["letiaca v\u010dela","hraj\u00faci reproduktor","kmitaj\u00faca struna","prav\u00edtko"],"correct":"prav\u00edtko","order":"2"},{"question":"Pre\u010do letiaci kom\u00e1r vyd\u00e1va vy\u0161\u0161\u00ed t\u00f3n ako letiaci \u010dmeliak?","answers":["lebo m\u00e1va pomal\u0161ie kr\u00eddlami","lebo m\u00e1va r\u00fdchlej\u0161ie kr\u00eddlami","lebo let\u00ed r\u00fdchlej\u0161ie","lebo let\u00ed pomal\u0161ie"],"correct":"lebo m\u00e1va r\u00fdchlej\u0161ie kr\u00eddlami","order":"3"},{"question":"\u010co je to frekvencia zvuku?","answers":["po\u010det kmitov za 1 min","ve\u013ekos\u0165 zmeny tlaku vzduchu za 1 s","ve\u013ekos\u0165 zmeny tlaku vzduchu za 1 min","po\u010det kmitov za 1 s"],"correct":"po\u010det kmitov za 1 s","order":"4"},{"question":"Ak\u00fd rozsah frekvenc\u00ed po\u010duje \u010dlovek?","answers":["2000 - 20 000 Hz","200 - 20 000 Hz","20 - 20 000 Hz","200 - 2000 Hz"],"correct":"20 - 20 000 Hz","order":"5"},{"question":"Ako sa \u0161\u00edri zvukov\u00e1 vlna?","answers":["\u010dastice vzduchu ve\u013ekou r\u00fdchlos\u0165ou putuj\u00fa od zdroja","\u010dastice vzduchu si vymie\u0148aj\u00fa svoje miesta","stl\u00e1\u010danie a roz\u0165ahovanie vzduchu postupuje \u010falej a \u010falej","ohrievanie a ochladzovanie vzduchu postupuje \u010falej a \u010falej"],"correct":"stl\u00e1\u010danie a roz\u0165ahovanie vzduchu postupuje \u010falej a \u010falej","order":"6"},{"question":"Ak\u00e1 je r\u00fdchlos\u0165 zvuku vo vzduchu?","answers":["3400 m\/s","1 km za 3 s","340 km\/s","1 m za 3 s"],"correct":"1 km za 3 s","order":"7"},{"question":"V ktorej l\u00e1tke sa vzduch \u0161\u00edri najr\u00fdchlej\u0161ie?","answers":["kau\u010duk","voda","sklo","oce\u013e"],"correct":"sklo","order":"8"},{"question":"Pre\u010do sa vzduch ne\u0161\u00edri vo v\u00e1kuu?","answers":["lebo tam nies\u00fa \u010dastice, ktor\u00e9 by mohli pohybova\u0165","lebo sa tam \u010dastice pohybuj\u00fa ve\u013emi r\u00fdchlo","nie je to pravda","lebo je tam n\u00edzka teplota"],"correct":"lebo tam nies\u00fa \u010dastice, ktor\u00e9 by mohli pohybova\u0165","order":"9"},{"question":"Graf zmeny tlaku vzduchu s polohou m\u00e1 tvar vlnovky. \u010co znamenaj\u00fa na tom grafe doliny?","answers":["miesta, kde sa \u010dastice vzduchu pohybuj\u00fa najpomal\u0161ie","miesta, kde sa \u010dastice vzduchu pohybuj\u00fa najr\u00fdchlej\u0161ie","miesta, kde s\u00fa \u010dastice vzduchu stla\u010den\u00e9","miesta, kde s\u00fa \u010dastice vzduchu \u010falej od seba"],"correct":"miesta, kde s\u00fa \u010dastice vzduchu \u010falej od seba","order":"10"}]