Changing the volume of buzzers
I can predict and test how to change the volume of buzzers in a circuit.
- Year 6
Changing the volume of buzzers
I can predict and test how to change the volume of buzzers in a circuit.
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 something that can be changed, measured or kept the same 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
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.Why won’t electricity flow around this circuit?
Q2.Which of these is a prediction?
Q3.Which of these does not affect the brightness of a bulb in a circuit?
Q4.The positive terminal of a has to be connected to the positive terminal of the cell or battery for it to work.
Q5.Match the action to the effect.
Q6.Which of these would cause a bulb to get dimmer?
Assessment exit quiz
6 Questions
Q1.__________ the number and voltage of cells increases the electrical push they provide.
Q2.What can scientists use to help them make prediction?
Q3.Does this data support the prediction that adding cells to a circuit makes a motor spin faster?
Q4.Sensors and data __________ can be used to make and record accurate measurements of light and sound.
