Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
23rd November 2020
- 1Atomic Structure and the Development of the Model
Describe the plum pudding model.
- 2Radioactivity, 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.
- 3Forces
A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 4Motion: Speed, Velocity and Acceleration
State what the gradient of a distance-time graph represents.
- 5Forces, Newton's Laws and Momentum
Explain why a larger vehicle mass increases braking distance.
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