Let's solve each question step by step based on the diagram and the concepts of electrical circuits.
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1. Name the parts of the circuit labelled X, Y and Z.
Looking at the diagram:
-
X is a
battery (it provides the electrical energy).
-
Y is a
switch (it controls the flow of current).
-
Z is a
wire (it conducts electricity from one component to another).
✔ Answers:
- X:
Battery
- Y:
Switch
- Z:
Wire
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2. Write the letter of the path that best matches each statement.
We are given three statements and need to match them with the correct part of the circuit.
i.
Provides the power source → This is the
battery, which is labeled
X
ii.
Path for electrons to flow → This is the
wire, which is labeled
Z
iii.
Opens or closes the circuit → This is the
switch, which is labeled
Y
✔ Answers:
- i.
X
- ii.
Z
- iii.
Y
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3. Explain what happens to the light bulb when the switch is closed. (1)
When the switch is closed, it completes the circuit, allowing electric current to flow from the battery through the wire, into the bulb, and back to the battery. The current heats the filament in the bulb, causing it to glow.
✔ Answer:
The light bulb lights up because the circuit is complete, allowing current to flow through the filament, which heats up and produces light.
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4. What is the name given to an object that does not allow electrons to flow through it easily?
An object that resists the flow of electrons is called an
insulator.
✔ Answer:
Insulator
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5. Which object is the best conductor of electricity?
a. Plastic – insulator
b. Glass – insulator
c. Copper –
metal, good conductor
✔ Answer:
c. Copper
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6. Mr. Smith works at an electrical plant. He wears rubber gloves to work every day. Explain why Mr. Smith uses these gloves daily. (1)
Rubber is an
insulator – it does not conduct electricity. Wearing rubber gloves helps protect Mr. Smith from electric shocks by preventing current from passing through his body if he touches live wires.
✔ Answer:
Mr. Smith wears rubber gloves because rubber is an insulator and prevents electric current from flowing through his body, protecting him from electric shock.
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✔ Final Answers Summary:
1.
- X:
Battery
- Y:
Switch
- Z:
Wire
2.
- i.
X
- ii.
Z
- iii.
Y
3. The light bulb lights up because the circuit is completed, allowing current to flow through the filament, heating it and producing light.
4.
Insulator
5.
c. Copper
6. Rubber gloves are insulators and prevent electric current from passing through his body, protecting him from electric shock.
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Parent Tip: Review the logic above to help your child master the concept of electrical circuits worksheet.
