Question 16
In this task, you will make and test predictions about the flow of current in a circuit. Work as a whole class.
You will need: a power supply or battery, wires longer than 2 metres, or many short wires that can be connected end to end, 4 identical lamps that can operate in series from the power supply.
1 Make a circuit with one lamp close to the negative terminal of the power supply.
2 Place the next lamp several metres away from the first lamp, and another lamp a similar distance from this lamp.
3 Place the fourth lamp close to the positive terminal of the power supply.
Do not switch on the lamps yet.
Discuss these questions as a whole class.
What name is given to a testable prediction?
You will need: a power supply or battery, wires longer than 2 metres, or many short wires that can be connected end to end, 4 identical lamps that can operate in series from the power supply.
1 Make a circuit with one lamp close to the negative terminal of the power supply.
2 Place the next lamp several metres away from the first lamp, and another lamp a similar distance from this lamp.
3 Place the fourth lamp close to the positive terminal of the power supply.
Do not switch on the lamps yet.
Discuss these questions as a whole class.
What name is given to a testable prediction?
