Daily Practice · GCSE Science

Daily Practice - GCSE Science

10th May 1998

5 questions · GCSE · 584 questions in this band

1
Atomic Structure
State the difference between irradiation and contamination.
2
Atomic Structure and the Development of the Model
State the approximate radius of a nucleus compared with the radius of an atom.
3
Radioactivity, Half-Life and Nuclear Uses
Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
4
Forces
State whether friction is a contact force or a non-contact force.
5
Motion: 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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