Reducing friction: practical
I can collect data to test the effectiveness of different lubricants, taking steps to ensure a fair test.
Reducing friction: practical
I can collect data to test the effectiveness of different lubricants, taking steps to ensure a fair test.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Lubricants are substances added between two surfaces to reduce the friction between them.
- In a fair test, only the variable we are testing is changed.
- In a fair test, everything we are not testing is kept the same for every measurement.
- Repeat measurements help check for anomalous results.
- A mean combines repeat measurements into a single result.
Keywords
Lubricant - Lubricants are substances added between two surfaces to reduce the friction between them.
Fair test - In a fair test, only the variable being tested is changed, so any differences in results can only be due to that variable.
Anomalous result - Anomalous results are ones that do not fit the pattern we see for other measurements.
Repeat measurement - A repeat measurement is when you make a measurement again to check the result.
Mean - A mean combines repeat measurements into a single result.
Common misconception
Friction is only between solids that are rubbing together.
Highlight the different amounts of friction between the solids that are separated by different liquids.
To help you plan your year 7 science lesson on: Reducing friction: practical, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 7 science lesson on: Reducing friction: practical, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 science lessons from the Forces unit, dive into the full secondary science curriculum, or learn more about lesson planning.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required