Daily Practice · GCSE Science
August 1973 5-a-day
Every sheet in August 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1973Name the process by which dissolved sugars are transported in the phloem.
- 2nd August 1973Why is photosynthesis described as endothermic?
- 3rd August 1973Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 4th August 1973State one human activity that reduces the amount of land available for other organisms.
- 5th August 1973State the two substances that must both be present for iron to rust.
- 6th August 1973State the size range of a nanoparticle.
- 7th August 1973Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 8th August 1973Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 9th August 1973Name the carboxylic acid produced when ethanol is oxidised.
- 10th August 1973Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 11th August 1973What happens to the energy described as 'wasted' in a transfer?
- 12th August 1973State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 13th August 1973Explain the difference between irradiation and contamination.
- 14th August 1973Define the term 'wavelength' of a wave.
- 15th August 1973State the difference between an alternator and a dynamo.
- 16th August 1973A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 17th August 1973Name the products of protein digestion.
- 18th August 1973State the difference between an antibiotic and a painkiller.
- 19th August 1973State the type of effector that produces a physical response by contracting.
- 20th August 1973Give one example of a biotic factor that could affect a population of rabbits.
- 21st August 1973Explain why potable water is not the same as pure water.
- 22nd August 1973Explain why sodium chloride conducts electricity when molten but not when solid.
- 23rd August 1973Convert 250 cubic centimetres into cubic decimetres.
- 24th August 1973A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
- 25th August 1973Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 26th August 1973Write the formula for calculating an Rf value.
- 27th August 1973Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
- 28th August 1973What happens to the total resistance when a second resistor is added in parallel, and why?
- 29th August 1973What happens inside the nucleus when a beta particle is emitted?
- 30th August 1973State two factors that increase a driver's thinking distance.
- 31st August 1973Name a typical material used to make a permanent magnet, and a typical material used to make an induced (temporary) magnet.