Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
8th March 2019
- 1The Atmosphere: Evolution and Greenhouse Gases
Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 2Climate Change and Atmospheric Pollutants
Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 3Physics Equations: Recall, Rearrangement and Application
Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 4Physics Required Practicals and Uncertainties
How is the uncertainty in a set of repeated readings usually estimated?
- 5Energy
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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