|
2
marks
|
a.
An outline plan or
testable hypothesis
b.
a sketch or partial
diagram of the practical set-up
c.
consideration of safety aspects of the plan
d.
a list of some
appropriate apparatus
|
|
b. a two-dimensional representation using where
appropriate, standard symbols.
c.
simple risk assessment, large loadings on wires. high voltages.
high vacuum etc.
|
|
|
4
marks
|
a
a detailed plan or testable hypothesis
b.
identification of an appropriate variable
c.
a labelled diagram of the full practical set-up and/or a circuit
diagram (where appropriate)
d.
a comprehensive list of apparatus
|
|
c.
a diagram showing details of the measurement(s) to be taken, for
example image-lens distance in an optics investigation.
d.
a list of all items of apparatus to he used during the
investigation including measuring instruments.
|
|
|
6
marks
|
a.
identification of variable to be kept constant
b.
number and range of readings to he taken
c.
logical sequence of readings to he taken
d.
full instrument or apparatus specification (e.g. instrument ranges)
|
|
b.
for example, ten
readings between 10.0 and 100.0 cm.
d.
for example. 0 to 5V voltmeter
reading to 0.I0V
|
|
|
8
marks
|
a.
at least one reason for procedures based on evidence of
knowledge and understanding (e.g. why range/number sequence of readings
should give good / more accurate results}
b.
justification for design based on supporting theory (e.g.
supporting formulae or calculations)
c.
aspects of the plan based on reasoned predictions
d.
use
of relevant information from secondary sources or preliminary work
|
|
a.
for example, limiting the current to avoid changes in resistance
due temperature change.
b.
for example. the calculation
of the maximum number of orders visible in a spectrometer experiment
d.
Evidence
of the use of a secondary source. e.g. data book or a preliminary
experiment.
|
|