Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
21st September 2012
- 1Atomic Structure
Which type of radiation is stopped by a sheet of paper?
- 2Atomic Structure and the Development of the Model
Describe the plum pudding model.
- 3Radioactivity, 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.
- 4Forces
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.
- 5Motion: Speed, Velocity and Acceleration
A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
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