Science 2nd grade | UNIT 5: Electricity 5.4 Using motors and buzzers
A motor can make things spin round. This is a motor.
All these things use motors.
A buzzer can make a sound. This is a buzzer.
A buzzer will only work if the wires are the right way round. The red wire from the buzzer must be connected to the positive side of the cell.
All these things use buzzers.
Activity 5.4a (Making a fan)
You will need: a cell - a cell holder - two wires - a motor scissors - card some sticky tack
Modupe is making a fan using a motor and card. Make a fan like this.
Now make a circuit to make it spin.
Connect the cell to the motor with wires to make a loop. Which way does the fan spin?
Now change the wires over at the cell.
What do you think will happen?
Activity 5.4b (Using a buzzer)
You will need: a cell - two wires - a buzzer - a cell holder
Make the buzzer work in a circuit.
Now change the wires over at the cell. What do you think will happen?