Daily Practice

GCSE Science

1st March 1991

5 questions · GCSE · 584 questions in this band

1
Chromatography and Instrumental Analysis
A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
2
Chemistry of the Atmosphere
Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
3
The Atmosphere: Evolution and Greenhouse Gases
Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
4
Climate Change and Atmospheric Pollutants
Explain how solid carbon particulates released by combustion can cause global dimming.
5
Physics Equations: Recall, Rearrangement and Application
State the equation for work done.

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