Daily Practice · GCSE Science
September 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2003State two conditions that increase the rate of transpiration.
- 2nd September 2003A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 3rd September 2003In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 4th September 2003Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 5th September 2003State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 6th September 2003Explain why graphite conducts electricity but diamond does not.
- 7th September 2003State what is observed when magnesium ribbon is added to copper sulfate solution.
- 8th September 2003State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 9th September 2003State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 10th September 2003Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 11th September 2003Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 12th September 2003A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 13th September 2003Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 14th September 2003Name the type of electromagnetic wave used to sterilise medical equipment.
- 15th September 2003A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 16th September 2003A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 17th September 2003Where is bile made and where is it stored?
- 18th September 2003Why does a vaccinated person not usually become ill when they meet the pathogen?
- 19th September 2003Explain why reflex responses are faster than voluntary responses.
- 20th September 2003Define community, in ecological terms.
- 21st September 2003Name the four stages usually considered in a life cycle assessment of a product.
- 22nd September 2003A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 23rd September 2003Calculate the concentration in moles per cubic decimetre of a solution containing 0.5 mol in 250 cubic centimetres.
- 24th September 2003State the energy transfer that occurs during an endothermic reaction.
- 25th September 2003Name the two industrial methods of cracking.
- 26th September 2003A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
- 27th September 2003Why should a line of best fit be drawn rather than joining the plotted points?
- 28th September 2003In a parallel circuit, how do the branch currents relate to the total current?
- 29th September 2003State the approximate radius of an atom.
- 30th September 2003Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.