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Runny liquids. You can test how thick a liquid is by measuring the time it takes for a marble to sink in it. See how to use the timer. try another. try another. time the marble yourself. Runny liquids. Compare how quickly the marble sinks in the two liquids.
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Runny liquids You can test how thick a liquid is by measuring the time it takes for a marble to sink in it. See how to use the timer.
Runny liquids Compare how quickly the marble sinks in the two liquids.