Daily Practice · GCSE Science
August 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2003Explain why type 1 diabetes is treated with insulin injections rather than tablets.
- 2nd August 2003In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
- 3rd August 2003Name one method used to sterilise fresh water during the production of potable water.
- 4th August 2003Give the charge on an ion formed by a group 2 element.
- 5th August 2003Write the word equation for the reaction between zinc and hydrochloric acid.
- 6th August 2003State one factor that affects the size of the voltage produced by a chemical cell.
- 7th August 2003Name the alkene with the molecular formula C4H8.
- 8th August 2003State the approximate percentage of nitrogen in today's atmosphere.
- 9th August 2003A spring is compressed. Which energy store increases?
- 10th August 2003Why is the live wire dangerous even when a device is switched off?
- 11th August 2003Describe the plum pudding model.
- 12th August 2003A spanner is used to loosen a bolt. Explain why using a longer spanner makes it easier to loosen the bolt.
- 13th August 2003State two ways of increasing the force produced by a motor effect setup, for a wire of fixed length at a fixed angle to the field.
- 14th August 2003Name the apparatus used to estimate the population of a slow-moving or non-moving species in a field.
- 15th August 2003Name the organ system responsible for breaking food down into small, soluble molecules.
- 16th August 2003Define a communicable disease.
- 17th August 2003Name the hormone released when blood glucose concentration is too high, and state its overall effect.
- 18th August 2003Define mutation.
- 19th August 2003An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 20th August 2003Explain why potassium is more reactive than sodium.
- 21st August 2003Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
- 22nd August 2003Give one everyday example of an endothermic process.
- 23rd August 2003The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
- 24th August 2003A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
- 25th August 2003A device transfers 4500 J in 90 s. Calculate its power.
- 26th August 2003A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 27th August 2003Why does a bicycle pump get warm when used?
- 28th August 2003State what the gradient of a distance-time graph represents.
- 29th August 2003Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 30th August 2003Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 31st August 2003What happens to the DNA before mitosis begins?