Casio EA-200 User Manual page 43

Activity: Operating the Equipment Activity: Operating the Equipment
í Measuring Data
u Prepare the Temperature Measurement Setup and start temperature measurement.
u Cover the system with the rain cover.
u Remembering that the mass of each of the substances is different, observe the measured
change in temperature and its relationship with the specific heat.
If there is the possibility that the EA-200 might become too hot, place a shade over the EA-200
to block the sun. Note that you should put a little water into the air bottle and a little air into the
seawater bottle. Doing so reduces the effect of thermal expansion inside each bottle.
2-15-2
English
í Calculator Operation
u Perform the following operation to prepare for temperature measurement using the
temperature probe.
Using E-CON
m"E-CON"w1(SETUP)c(Advan)
b(Channel)1(CH1)c1(CASIO)c(TEMP)b(°C)c1(LIST) 2w
c2(CH2)c1(CASIO)c(TEMP)b(°C)c1(LIST) 3w
c3(CH3)c1(CASIO)c(TEMP)b(°C)c1(LIST) 4ww
c(Sample)1(NO)c1(TIMER) 360wc1(NUM) 241ww1(START)
Using a Calculator Program
Find the applicable program in the Program Library (P.2-16-4), input it into your calculator,
and then run it.
u Display the temperature measurements.
1 Air
2 Seawater
3 Earth
T :
(°C) Temperature
t :
(s) Time
Other Things To Do
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u Use the measurement results to estimate differences in air temperature between a
dry inland area and a coastal area.
u Use the specific heat values provided in the table for seawater and stone to calculate
the quantity of heat absorbed by the seawater and earth in the bottles, and compare
them. Consider why this value is different for each of the bottles.
u Try replacing the substances inside the bottles with other substances.
u Consider why it is impossible to determine the specific heat value from temperature
changes, and to determine the ratio of specific heat between two substances.
u Attach one optical probe to the EA-200, and investigate the relationship between
light intensity and change in temperature.
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Measurement Measurement