Daily Practice
GCSE Science
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19th December 1992
- 1Atomic Structure
Define half-life.
- 2Atomic Structure and the Development of the Model
What observation showed that the atom is mostly empty space?
- 3Radioactivity, Half-Life and Nuclear Uses
Define the term 'half-life' of a radioactive isotope.
- 4Forces
State whether friction is a contact force or a non-contact force.
- 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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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1992, including the monthly compilation PDF.