{"type":"multi-choice","id":"73000","dataJson":{"key":2,"prompt":"Light moves faster through water than through air.","options":[{"key":"0.639257999100631","label":"True","value":"True"},{"key":"0.7818739413460537","label":"False","value":"False"}],"limitChoices":{"max":1,"min":1},"validResponse":["False"]}}

{"type":"fill-in-blanks","id":"73001","dataJson":{"key":3,"prompt":"Fill out the blanks","options":{"air":[{"label":"water","value":"water"},{"label":"air","value":"air"},{"label":"soil","value":"soil"}],"hot":[{"label":"cold","value":"cold"},{"label":"dry","value":"dry"},{"label":"hot","value":"hot"}],"rays":[{"label":"waves","value":"waves"},{"label":"rays","value":"rays"}],"speed":[{"label":"speed","value":"speed"},{"label":"temperature","value":"temperature"},{"label":"sound","value":"sound"}],"distorted":[{"label":"clear","value":"clear"},{"label":"closer","value":"closer"},{"label":"distorted","value":"distorted"}]},"template":"On an extremely {{hot}} day, you can see heat haze. This is when some {{air}} get hotter that the rest and changes the {{speed}} of light. Light {{rays}} get bent as they pass through the heat and things beyond the haze look {{distorted}}. ","validResponse":{"air":"air","hot":"hot","rays":"waves","speed":"speed","distorted":"distorted"}}}

{"type":"multi-choice","id":"73002","dataJson":{"key":11,"prompt":"Which of these can you see light through? (Tick 2 boxes)","options":[{"key":"0.9166034420386687","label":"translucent","value":"translucent"},{"key":"0.3101612951153392","label":"transparent","value":"transparent"},{"key":"0.6165246616706801","label":"opaque","value":"opaque"}],"limitChoices":{"max":2,"min":2},"validResponse":["translucent","transparent"]}}

{"type":"multi-choice","id":"73003","dataJson":{"key":12,"prompt":"When light rays pass from one transparent medium to another, they appear to change direction. What is this called?","options":[{"key":"0.9832595626796127","label":"reflection","value":"reflection"},{"key":"0.7348638716915373","label":"refraction","value":"refraction"},{"key":"0.2207920548789155","label":"reduction","value":"reduction"}],"limitChoices":{"max":1,"min":1},"validResponse":["refraction"]}}

{"type":"multi-choice","id":"73004","dataJson":{"key":15,"prompt":"When an object is placed in water, how will it appear?","options":[{"key":"0.9333896200105927","label":"misshapen","value":"misshapen"},{"key":"0.3780838883132317","label":"clearer","value":"clearer"},{"key":"0.8309536276588918","label":"smaller","value":"smaller"},{"key":"0.5047517146579082","label":"disappear ","value":"disappear "}],"limitChoices":{"max":1,"min":1},"validResponse":["misshapen"]}}

Answer incorrect

Look at the slide below to work out the answer.