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Year 6 - Science

Changing the volume of buzzers

Changing circuits

Unit Summary

This unit explores how circuit components like lamps and buzzers function, including the effect of cell number and voltage. It covers using symbols in circuit diagrams, planning scientific enquiries, taking precise measurements, recording data, and presenting findings with evidence and conclusions.

Lesson Summary

You will learn to predict and test how to change the volume of buzzers in a circuit.

Key Notes

  • 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.

Vocabulary To Learn

  • 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 Mistakes To Avoid

  • Children may not understand how variables interact within a circuit and how changes in one variable can affect others.

3 Quick Questions (With Answers)

1. Explain the scientific idea in this lesson using two key points.

Increasing the number and voltage of batteries increases the electrical push they provide. Test results help scientists to make predictions for further investigations.

2. Define this scientific word and use it in context. 'variables'

A variable is something that can be changed, measured or kept the same in an investigation. Include the word in a full scientific explanation, not as a single label.

3. Correct this common scientific misunderstanding.

Mistake: Children may not understand how variables interact within a circuit and how changes in one variable can affect others. Correction: 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.

More Lessons In This Unit

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