|Sheet 5 -
Measurement & Control
device is being used to investigate the effect of sunlight on the
photosynthesis of oxygen by a water plant. The water is
maintained at a constant temperature throughout the experiment.
- Name the two
different devices, labelled A and B, that are attached to
- The experiment
is to be left for one week, suggest a time interval for
measurements to be recorded.
- During the
experiment the data-logging device is not attached to a
computer. What does it do?
- Name the device
- Explain how
feedback from C is used to maintain the experiment at a
- After one week
the data-logging device is attached to a desktop computer
and the data transferred to a spreadsheet program.
Suggest how the results might be displayed.
- State two
reasons why it is better to perform this investigation in
this way, rather than by hand.
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