KWUN TONG GOVERNMENT SECONDARY SCHOOL
S2 INTEGRATED SCIENCE
Chapter 8 Making use of electricity
Name: ______________ (
)
Class: S2__
Class no.: ____
Experiment 8.6
Investigating the factors affecting the resistance of a wire
Aim of investigation
To find out the ____________ affecting the ______________ of wire and how these
____________ change the resistance
Apparatus and materials per group
Wooden board mounted with wires of different materials,
lengths and thickness
1
Set up
Safety precautions
1.
Do not touch the ___________ when the switch is on.
1
Procedures of the investigation
1.
Identify the ________ affecting the _____________ of a wire. They are
__________, ___________ and _____________.
2.
Predict how these ___________ change the ______________ of a wire.
3.
To compare the _______________ of wires of same length and thickness but
different ____________.
4.
To compare the _______________ of wires of same material and length but
different ____________.
5.
To compare the _______________ of wires of same material and thickness but
different ____________.
6.
Connect the __________ as shown in the above diagram and complete the table.
7.
Observe the ____________ of the light bulb to compare the ____________.
Results
Material
Thickness
Length
Thin
Long
Thin
Long
Copper
Long
Copper
Long
Copper
Thin
Copper
Thin
Brightness of bulbs
Conclusion
The ____________ of a wire depends on the material used. It also depends on its
_________ and _____________. _____________ and ____________ wire has a
lower ____________.
2