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Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don’t stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance. What stage of scientific investigation does his guess represent? ask questions construct a hypothesis explain the results make observations

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KellenCorrallo
Construct an hypothesis (Because the magnet wasn't attracted to the door, the door must be non-magnetic.) He has already made an observation (the magnent didn't stick), and already asked a question (Why didn't the magnent stick). However, he has not explained the results (there is no experiment yet). 

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