How do you think cereal type and flake width affects break point?
The experiment finds the break point of cereal flakes
NPL runs, designs and checks similar tests
on materials for engineers to make the world safer
Estimated time: 30 minutes
No experience needed
Deadline for results entry: end of 13 May 2020
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Make sure the measurement area is clean and tidy before and afterwards.
Watch the video, then follow the instructions.
Build your test apparatus. Arrange two pencils on your kitchen scales with a small gap between, and secure with Blue-tac
Pick up your first flake for investigation
Measure and write down the ‘width’ of the flake (not thickness). Also record type (cornflake, bran flake, etc)
Place the flake sample on the test apparatus so the larger length bridges the pencils
Tare the scales (set them to zero)
Push your finger down on the flake between the pencils very slowly increasing pressure while looking at the scale’s reading. Write down the reading when the flake breaks
Convert your reading of the weight in kg to force by multiplying by 10. Your answer will now be in newtons (N)
Repeat for as many as you can, then copy your results into the table below
Up until the end of 13 May 2020 you can enter results via the webpage and share videos or images of your tests on social media using #MeasurementAtHome
Return to this page on Friday 15 May 2020 for a report on the first week of responses to this experiment.
SI measurement units
Challenge Topics: Measurement Science, Maths, Physics, Materials Testing
To find out the results of our first #measurementathome challenge, read our report.
Break a Flake Report