Daily Practice

13+ Common Entrance

18th April 1985

5 questions · Years 7-8 · 744 questions in this band

1
Chemistry: Reactions, Energy and Rates
Explain, using collision theory, why crushing a solid into a powder increases the rate of reaction.
2
Chemistry: Metals, the Reactivity Series and Environmental Chemistry
Name the gas released when fossil fuels are burned that is the main cause of the enhanced greenhouse effect.
3
Physics: Forces and Energy
A parcel of mass 2.5 kg is lifted onto a shelf 2 m above the ground. Take g = 10 N/kg and use GPE = mass x g x height. Calculate the gain in gravitational potential energy.
4
Physics: Electricity, Magnetism and Waves
A wave has a frequency of 50 Hz and a wavelength of 4 m. Use wave speed = frequency x wavelength to calculate its speed.
5
Physics: Light, Sound and Space
Put these bodies in order of their distance from the Sun, starting with the closest: Mars, Mercury, Earth, Venus.

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