Changing the volume of buzzers | Science | Quizalize & Oak National Academy

Starter quiz

Why won’t electricity flow around this circuit?
- There is no cell.
- The switch is open.
- The components are not all connected. ✓
Which of these is a prediction?
- The bulb got dimmer.
- Attach the bulb to the other components.
- We expect the bulb to get dimmer. ✓
Which of these does not affect the brightness of a bulb in a circuit?
- the number of cells
- the voltage of cells
- the number of bulbs
- the position of a bulb ✓
The positive terminal of a ______ has to be connected to the positive terminal of the cell or battery for it to work.
- 'buzzer' ✓
Match the action to the effect.
- increasing the voltage of cells
  
  ⇔
  
  increased electrical push to the circuit ✓
- decreasing the voltage of cells
  
  ⇔
  
  decreased electrical push to the circuit ✓
Which of these would cause a bulb to get dimmer?
- adding components to a circuit ✓
- adding cells to a circuit
- removing components from a circuit
- removing cells from a circuit ✓

Exit quiz

__________ the number and voltage of batteries increases the electrical push they provide.
- Increasing ✓
- Decreasing
- Removing
What can scientists use to help them make prediction?
- the diagrams from previous investigations
- the results from previous investigations ✓
- the equipment from previous investigations
Does this data support the prediction that adding cells to a circuit makes a motor spin faster?
- 'no' ✓
Sensors and data __________ can be used to make and record accurate measurements of light and sound.
- laggers
- noters
- recorders
- loggers ✓
What unit is sound measured in?
- decimals
- volume
- decibels ✓
- volubels
Scientists evaluate __________ to compare what was expected to what actually happened.
- equipment
- results ✓
- volume
- buzzers

Worksheet

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Presentation

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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.

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.

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.