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===Examples===
: A [[scientist]] uses a [[Stopwatch|timerstopwatch]] to see how long it takes for a [[kettle]] to [[Boiling|boil]].
: A [[scientist]] took one picture of a [[plant]] every day to see how it [[Growth|grows]].
: A [[scientist]] [[Touch|touched]] a [[window]], a [[brick]] and some [[carpet]] to find out which one had the roughest [[texture]].