ACTIVITY 2: Read the following information and perform the laboratory exercise that follows.

    The only certain thing about measurements in experiments is that there is no certainty.  The best you can do is minimize the uncertainty in an experiment.  The degree of uncertainty depends on the precision of the measuring instrument and the skill of the user.  Instruments with more divisions are usually more precise and have a precision equal to one-half the smallest division of the instrument. For example , the precision of a meterstick is 0.5mm or 0.005m.

    You can be a skillful user of a meterstick by following these basic rules.  Read the measurements from directly in front of the meterstick at eye level.   Be consistent in technique.  Don't use the markings at the end of a meterstick.  Use a mark farther along the stick and subtract the lower measure from the higher one.

Click on the blocks below to view the "PROCEDURE "