Science Entry Examination Worksheet With Answers - Whitgift School Page 39
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50Whitgift School
(b)
•
concentration (of hair dye)
accept ‘conc’
‘hair dye’ is insufficient
accept ‘strength of hair dye’
‘strength’ is insufficient
accept ‘percentage’
do not accept ‘force’ or ‘mass’ or ‘weight’
1 (L5)
(c)
any one from
•
mass needed to break the hair
accept ‘force’ or ‘weight’
accept ‘mass’
•
strength of hair
‘strength’ is insufficient
1 (L5)
(d)
•
the greater the concentration of hair dye
the less mass is needed (to break the hair)
accept the converse
accept ‘the stronger the hairdye, the weaker it is’
accept ‘the stronger, the less weight is needed (to break the
hair)’
accept ‘it is a negative correlation’
references to time are neutral
‘the stronger the weaker’ is insufficient
‘the hair is weaker when he uses more dye’ is insufficient
1 (L6)
(e)
•
soaking time
accept ‘time’
column headings may be reversed
the unit mark can be awarded only if consistent with the
heading
1 (L6)
•
minutes or seconds or hours
accept unambiguous indications of the units e.g. ‘min(s)’ or
‘s’ or ‘sec’ or ‘h’ or ‘hrs’
‘m’ is insufficient as it is ambiguous
1 (L6)
•
mass (needed to break hair)
accept ‘strength’ or ‘weight’ or ‘force’
1 (L6)
•
grams or g
accept ‘N’ where ‘force’ is given in place of mass
do not accept ‘n’ for ‘N’
accept ‘N’ or ‘g’ for weight
do not accept ‘g’ if ‘force’ is given
1 (L6)
[11]
Whitgift School
| 13+ Science Examination - Sample Paper
39
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