Daily Practice · GCSE Science

Daily Practice - GCSE Science

13th April 1996

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
Explain why carbon monoxide is dangerous even though it has no smell.
3
Physics Equations: Recall, Rearrangement and Application
Convert 3.5 kJ into joules.
4
Physics Required Practicals and Uncertainties
Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
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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