Science 4th grade | UNIT 5: Electricity and magnetism 5.4 Circuits with more components
Activity 5.4 (Making a circuit with more components)
You will need: two cells - three bulbs in bulb holders - a switch - wire - a sharp knife - scissors - tape elastic band - a stick
So far you have made a circuit with one bulb and one cell. Use tape to join two cells together to make a stronger cell. Make sure the positive and negative terminals are next to each other.
Use the scissors to cut the wire into short lengths. Complete your circuit using three bulbs in bulb holders as shown.
Close the switch. Observe the bulbs. Open the switch.
Remove one bulb and a bulb holder so that only two bulbs are left in your circuit.
Predict what would happen if you remove one more bulb in a bulb holder. This means that only one bulb remains in your circuit. Test your prediction. What happens to your bulb?
Questions
1) Did the bulbs shine more brightly or less brightly when you removed one bulb from the circuit? Why do you think this happened?
2) What happened when you only used one bulb in the circuit? Why do you think this happened?
3) Describe the path of the electricity in the circuit you made.