Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
4th December 2025
- 1Radioactivity, Half-Life and Nuclear Uses
A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 2Forces
A gardener pushes a mower with a force of 60 N through a distance of 8.0 m. Calculate the work done. Use W = F x s.
- 3Motion: Speed, Velocity and Acceleration
State what the gradient of a distance-time graph represents.
- 4Forces, Newton's Laws and Momentum
Explain why a larger vehicle mass increases braking distance.
- 5Pressure, Moments and Levers
Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
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