Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
11th April 2023
- 1Atomic Structure
A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 2Atomic Structure and the Development of the Model
Why is the atomic model a good example of how scientific models change?
- 3Radioactivity, Half-Life and Nuclear Uses
Explain the difference between irradiation and contamination.
- 4Forces
A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 5Motion: Speed, Velocity and Acceleration
A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
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