Science Entry Examination Worksheet With Answers - Whitgift School Page 47
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50Whitgift School
M12. Markers should read the answers to parts a and b before marking this question
parts a and b should be marked together
(a)
•
temperature of the water
accept ‘temperature’
accept ‘room temperature’
do not accept responses that describe rates of heating.
1 (L7)
any one from
•
rate of evaporation
accept ‘the time for it to evaporate’
answers must refer to both time taken and amount of water
lost
•
time taken for all the water to evaporate
accept ‘measure how much water is left after a certain time’
‘time taken’ is insufficient
•
volume or mass or amount of water lost in a fixed time
1 (L7)
any one from
•
starting volume of water
accept ‘the amount of water’
accept a specified volume of water
‘same heater’ and ‘same starting measurement’ are
insufficient
•
shape of container
•
same ambient conditions
accept ‘room temperature’ if the independent variable is
‘water temperature’
1 (L7)
(b)
a column or row indicating temperature and a column or
row indicating time or volume lost or volume remaining
accept a column or row indicating ‘rate of evaporation’
accept ‘amount lost’ or ‘amount remaining’
both headings are required for the mark
the units of measurement are not necessary for the mark
the second column or row should be consistent with the
dependent variable identified in part a
ignore other columns in the table
1 (L7)
[4]
Whitgift School
| 13+ Science Examination - Sample Paper
47
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