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Week 5 - Science P5

This document is a lesson plan for Primary 5 students on the topic of electricity and water conductivity. It includes instructions for an experiment to test if water conducts electricity using a simple circuit with batteries, a bulb, and saltwater. The document emphasizes the importance of electrical conductors and insulators and provides safety tips for handling electrical plugs.

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malik fajar
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27 views5 pages

Week 5 - Science P5

This document is a lesson plan for Primary 5 students on the topic of electricity and water conductivity. It includes instructions for an experiment to test if water conducts electricity using a simple circuit with batteries, a bulb, and saltwater. The document emphasizes the importance of electrical conductors and insulators and provides safety tips for handling electrical plugs.

Uploaded by

malik fajar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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SCIENCE Primary 5

Does water conduct electricity?


Week 5

We use an electric plug to plug an electrical appliance or device into an


electric socket to get electricity from the mains. Look at this electric plug,
socket cover and switch button. Which parts are made of electrical
conductors? Which parts are made of electrical insulators? Why?

The parts of electrical devices that we want electric current to flow


through them are made of electrical conductors. The parts that we want
protected from electric current are made of electrical insulators.

Look at these pictures. Which is the correct way to remove an electric


an electric plug from an electric socket?

If we remove the plug by pulling the cable, the cable and the insulation
may become damaged. The correct way is to grip the plug when we remove it
from the socket.

1
SCIENCE Primary 5
Does water conduct electricity?
Week 5
A series of circuit is an electric circuit in which its electrical components
are connected one another to form a single loop. The following table shows
the symbols of some common electrical components.

2
SCIENCE Primary 5
Does water conduct electricity?
Week 5
Name : Date :

Does water conduct electricity?

ACTIVITY 3

You will need:

1. Two cells (batteries) taped together


2. An elastic band
3. A bulb and bulb holder
4. 3 x 20 cm pieces of wire
5. Scissor
6. Two strips of aluminium foil
7. 250 ml water
8. 2 teaspoons salt
9. Spoon or wooden spatula for stirring
10. Glass beaker or drinking glass

Instructions:

1. Cut the wire into 10 cm lengths and strip off 2 cm


of the plastic covering from each end of the wires.
2. Make a circuit with the batteries, the bulb in the bulb
holder and the three lengths of wire. Make sure the
two cells are held securely together. Use an elastic
band wound round lengthways and perhaps wooden
chopsticks or satay sticks as well as tape to hold them
in line.
3. Test the circuit by holding the bare ends of wire
together. If the bulb does not light up, check all
connections and try again.
4. Fold the two pieces of aluminium foil into 2 cm wide
strips and press the strips round the ends of the
3
SCIENCE Primary 5
Does water conduct electricity?
Week 5
bare wires.
5. Pour 250 ml water into the glass beaker.
6. Dip the aluminium foil ends into the water.
7. Take the strips out of the distilled water. Add the
salt to the water and stir it until has dissolved.
8. Dip the aluminium foil ends into the salt water.
9. Happy playing!

4
SCIENCE Primary 5
Does water conduct electricity?
Week 5
Conclusion:

(Explain what happened to the light? When did the bulb light up and
when didn’t? Why was that happening?)

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