Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
14th October 2007
- 1Atomic Structure
State the difference between irradiation and contamination.
- 2Atomic Structure and the Development of the Model
State the approximate radius of a nucleus compared with the radius of an atom.
- 3Radioactivity, Half-Life and Nuclear Uses
Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 4Forces
State whether friction is a contact force or a non-contact force.
- 5Motion: Speed, Velocity and Acceleration
On a velocity-time graph, what does the area between the line and the time axis represent?
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