Daily Practice

GCSE Science

5th November 1991

5 questions · GCSE · 584 questions in this band

1
Atomic Structure
A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
2
Atomic Structure and the Development of the Model
Why is the atomic model a good example of how scientific models change?
3
Radioactivity, Half-Life and Nuclear Uses
Explain the difference between irradiation and contamination.
4
Forces
Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
5
Motion: Speed, Velocity and Acceleration
A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of November 1991, including the monthly compilation PDF.