60
G
ETTING
S
TARTED WITH THE
CBL 2™ S
YSTEM
© 2000, 2003 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
Part 1
Set up the Experiment
1.
First, select a piece of copper (or U. S. penny that is dated between 1959 and
1982, inclusive) and a zinc washer. The washer can be any size, but the same
washer must be used throughout the experiment. A washer the same diameter
and thickness as the penny works well.
Clean the penny and washer with soap and water and dry them. Answer
question 1 on the Student Data Reporting Sheet.
2.
Collect a container of water to clean the two metals as you switch from one
item to the next. You also need paper towels, a plastic knife to cut notches in
the fruit, and a ruler to measure the 2 cm distance between the notches. (This
distance should be the same for all batteries.)
3.
Collect the 5 fruits to test. The order in which you test them is not important,
but you will need to give each fruit a number before you start the experiment.
Fill in the first two columns in the table in question 2 on the Student Data
Reporting Sheet.
4.
Connect the CBL 2 to your calculator. Connect the TI voltage sensor to Channel 1
(CH1) of the CBL 2.
5.
On the calculator, run the DataMate program or app.
DataMate automatically identifies the TI voltage sensor
and loads a default experiment. (We will change these
settings.)
The Main Screen of DataMate is shown.
