Changing the volume of buzzers
I can predict and test how to change the volume of buzzers in a circuit.
Changing the volume of buzzers
I can predict and test how to change the volume of buzzers in a circuit.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Increasing the number and voltage of batteries increases the electrical push they provide.
- Test results help scientists to make predictions for further investigations.
- Sensors and data loggers can be used to make and record accurate measurements of light and sound.
- Scientists evaluate results to compare what was expected to what actually happened.
Keywords
Variables - A variable is a factor that can be changed in an investigation.
Component - A component is a device in a circuit that has a specific function.
Predict - To predict is to say what you think will happen.
Buzzer - A buzzer is a device in an electrical circuit which makes a noise.
Decibel - A decibel is a unit used to measure the volume of sound.
Common misconception
Children may not understand how variables interact within a circuit and how changes in one variable can affect others.
Teaching slides will relate the need to control variables in a fair test to the need to do so with circuits in order to be able to relate a given variable to a measured outcome.
Equipment
Equipment for simple circuits: cells, wires, buzzers, bulbs and equipment to measure the volume of a buzzers.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
increased electrical push to the circuit
decreased electrical push to the circuit
Exit quiz
6 Questions
