Daily Practice

GCSE Science

25th January 1970

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
On a velocity-time graph, what does the area between the line and the time axis represent?

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