Daily Practice

GCSE Science

14th September 1991

5 questions · GCSE · 584 questions in this band

1
Chemistry of the Atmosphere
Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
2
The Atmosphere: Evolution and Greenhouse Gases
Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
3
Climate Change and Atmospheric Pollutants
Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
4
Physics Equations: Recall, Rearrangement and Application
A device transfers 4500 J in 90 s. Calculate its power.
5
Physics Required Practicals and Uncertainties
Give one reason for taking the gradient from the line of best fit rather than from two data points.

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