NAME_________________________________________________________ DATE_______________________
CLASS: 4ST
Title: HEAT
Aim: To observe the rate of conduction in relation to the increase in length of a metal.
Apparatus and materials: metal wire of lengths 5cm, 10cm and 15 cm, candle, candle wax and stop watch
Diagram:
Instructions :
1. Obtain metal wire of same diameter and cut to lengths 5cm, 10cm, and 15cm.
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 10cm 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 two 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 :
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 trend or pattern
d - sources of errors are present and correct
e- conclusion is related to aim
OBSERVATION, RECORDING AND REPORTING (1 mark each) total 4 marks
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 what is conduction
GRAPH (1 mark each) total 4 marks
a- Scale is appropriate
b- Axes labelled
c- Correct plotting and graph is suitable
d- Title is present
TABLE (1 mark each) total 4 marks
a- Headings are correct
b- Units are present in the headings
c- Data recorded is correct or suitable
d- Title is present
