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Gummy Bear Graphing - DOC

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					Gummy Bear Graphing



Question: How does the size of a gummy bear change when it is soaked in water?
Hypothesis:
If________________________________________________________________________________________
then_____________________________________________________________________________________
Background information – Mass is the amount of matter in an object.
Materials:
Gummy Bear Candies                               Water Paper Towels
Triple Beam Balance                              Ruler
Beaker
Procedure:
    1. Fill the beaker ½ full with water.
    2. Find the mass of one of the Gummy Bears. Record the mass in the data chart.
    3. Find the length of the Gummy Bear in mm. Record the length in the data
        chart.
    4. Put the Gummy Bear in the beaker of water. Let it soak for 2 minutes.
    5. After two minutes, take the Gummy Bear out of the water. CAREFULLY pat it
        dry with a paper towel.
    6. Find the mass and length again. Record. Put the Gummy Bear back in the
        water for another two minutes.
    7. Repeat steps 5 and 6 until the Gummy Bear has soaked in water for a TOTAL
        of 20 minutes. Record all data.
Data:
Mass (g) and length (mm) of Gummy Bears in water.
                                Gummy Bear Data Table
         Time (min)                        Mass                         Length
            Start
               2
              4
               6
               8
              10
             12
             14
             16
              18
             20
        Total Change
Data Analysis:
Using a separate sheet of paper, make two line graphs to help examine this data. Plot
the mass data from the experiment on one graph and length data on another graph.
Label each axis and give each graph a title.


Post-lab Questions:
   1. What is the relationship between time and mass?


   2. What is the relationship between time and length?


   3. What was the independent variable in this experiment?


   4. What was the dependent variable in this experiment?


   5. What were some controlled variables in this experiment?


   6. Why was a line graph the best choice in this experiment?


   7. What do you think would happen if you put the Gummy Bear in salt water
      overnight?

				
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posted:9/7/2010
language:English
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Jun Wang Jun Wang Dr
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