NAME________________________________________________________ DATE_______________________
CLASS:
Title: HEAT
Aim: To determine the rate of conduction of a metal of various lengths.
Apparatus and materials : metal(sizes 3cm, 4cm, 5cm, 6cm, 7cm), stopwatch, candle, wax, lighter, pliers
Diagram:
Instructions :
1. Obtain a wire of lengths 3cm,4cm, 5cm,6cm,7cm
2. Cut small pieces of candle wax and attach it to one end of the wire of each.
3. Light the candle and place the opposite end of the 3cm wire in the direct flame.
4. Using the stop watch, take the time for the wax to fall of the end of the wire.
5. Repeat for the other four wires to obtain their timings.
6. Present data obtained in a table and sketch a graph to show the relationship between length and time.
Method:
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Results :
Title :_______________________________________________________________________________________________
GRAPH:
Observation:____________________________________________________________________________________________
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Discussion:______________________________________________________________________________________________
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Sources of errors:
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Conclusion:
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ANALYSIS AND INTERPRETATION ( 1 mark each) total 5 marks
a – use of scientific terminology ,clarity, past tense in write up
b– identify relationship, trend or pattern in discussion
c – discussion explains the reason for increased timing as the length increases.
d - sources of errors are present and correct
e- conclusion is related to aim
OBSERVATION, RECORDING AND REPORTING (1 mark each) total 4
a – use of correct terminology , few grammatical errors in write up
b – results obtained are appropriate
c – observations made are correct or suitable
d – discussion explains why the timing is increased with the length increase
GRAPH (1 mark each) total 4
a- Scale is appropriate
b- Axes labelled
c- Correct plotting and graph is suitable
d- Title is present
TABLE (1 mark each) total 4
a- Headings are correct
b- Units are present in the headings
c- Data recorded is correct or suitable
d- Title is present
