Daily Practice · GCSE Science

Daily Practice - GCSE Science

23rd December 1998

5 questions · GCSE · 584 questions in this band

1
The Atmosphere: Evolution and Greenhouse Gases
Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
2
Climate Change and Atmospheric Pollutants
State the two products of the complete combustion of a hydrocarbon fuel.
3
Physics Equations: Recall, Rearrangement and Application
Why should you write down the equation even if you cannot finish the calculation?
4
Physics Required Practicals and Uncertainties
In the specific heat capacity practical, why is the block insulated?
5
Energy
A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.

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