{"type":"multi-choice","id":"75058","dataJson":{"key":1,"prompt":"A sound measured at 84dB is actually 100 times louder than a sound measured at 82dB.","options":[{"key":"0.8999069114476344","label":"True","value":"True"},{"key":"0.4786135095259577","label":"False","value":"False"}],"limitChoices":{"max":1,"min":1},"validResponse":["True"]}}

{"type":"fill-in-blanks","id":"75059","dataJson":{"prompt":"Fill in the blanks.","options":{"Hertz":[{"label":"Hertz","value":"Hertz"},{"label":"Avis","value":"Avis"},{"label":"Sixt","value":"Sixt"}],"decibels":[{"label":"decibels","value":"decibels"},{"label":"dumbells","value":"dumbells"},{"label":"annabels","value":"annabels"}],"loudness":[{"label":"loudness","value":"loudness"},{"label":"colour","value":"colour"},{"label":"depth","value":"depth"}],"oscilloscope":[{"label":"oscilloscope","value":"oscilloscope"},{"label":"periscope","value":"periscope"},{"label":"stethoscope ","value":"stethoscope "}]},"template":"Volume is the measure of a sound's {{loudness}} and is measured in {{decibels}}. A sound's pitch is measured in {{Hertz}}. High pitch sounds tend to be screechy and low pitch sounds tend to be deep. The best way to analyse a sound is to use a device called an {{oscilloscope}}.","validOptions":["Hertz","decibels","loudness","oscilloscope"],"validResponse":{"Hertz":"Hertz","decibels":"decibels","loudness":"loudness","oscilloscope":"oscilloscope"}}}

{"type":"multi-choice","id":"75060","dataJson":{"key":15,"prompt":"What device do singers use on stage to make their voice heard throughout the theatre?","options":[{"key":"0.7402317456726157","label":"microphone","value":"microphone"},{"key":"0.24063155702513184","label":"megaphone","value":"megaphone"},{"key":"0.034513830337455254","label":"telephone","value":"telephone"},{"key":"0.9423766783456072","label":"dictaphone","value":"dictaphone"}],"limitChoices":{"max":1,"min":1},"validResponse":["microphone"]}}

{"type":"multi-choice","id":"75061","dataJson":{"key":3,"prompt":"When looking at sound waves, what tells us how loud a sound is?","options":[{"key":"0.011477171942846476","label":"The distance between waves","value":"The distance between waves"},{"key":"0.46956482949959955","label":"The frequency of the wave","value":"The frequency of the wave"},{"key":"0.3609833451148311","label":"The amplitude of the wave","value":"The amplitude of the wave"}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The amplitude of the wave"]}}

{"type":"multi-choice","id":"75062","dataJson":{"key":4,"prompt":"When looking at sound waves, how do we know the pitch of a sound? ","options":[{"key":"0.8090209231000459","label":"By looking at the height of the waves","value":"By looking at the height of the waves"},{"key":"0.47512061181542986","label":"By looking at the frequency of waves","value":"By looking at the frequency of waves"},{"key":"0.7367398852171063","label":"By looking at the thickness of the line ","value":"By looking at the thickness of the line "}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["By looking at the frequency of waves"]}}

Answer incorrect

Look at the slide below to work out the answer.