Daily Practice

GCSE Science

6th September 1986

5 questions · GCSE · 584 questions in this band

1
Atomic Structure
Define half-life.
2
Atomic Structure and the Development of the Model
What observation showed that the atom is mostly empty space?
3
Radioactivity, Half-Life and Nuclear Uses
Define the term 'half-life' of a radioactive isotope.
4
Forces
A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
5
Motion: Speed, Velocity and Acceleration
Define the term 'vector quantity' and give one example.

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