Daily Practice · GCSE Science
April 2002 - GCSE Science 5-a-day
Every GCSE Science sheet published in April 2002, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in April 2002
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2002State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 2nd April 2002Name the catalyst used when an alkene reacts with hydrogen to form an alkane.
- 3rd April 2002State the approximate percentage of nitrogen in today's atmosphere.
- 4th April 2002A spring is compressed. Which energy store increases?
- 5th April 2002Give the colour and function of the earth wire.
- 6th April 2002What observation showed the nucleus is positively charged and very small?
- 7th April 2002A force of 40 N is applied 0.25 m from a pivot. Calculate the moment.
- 8th April 2002A rectangular coil carrying a current is placed in a magnetic field, with its two long sides parallel to each other. Explain why the coil rotates rather than moving in a straight line.
- 9th April 2002A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
- 10th April 2002Name the organ system responsible for breaking food down into small, soluble molecules.
- 11th April 2002Give one way of reducing the spread of malaria.
- 12th April 2002Define homeostasis.
- 13th April 2002Give one example of variation that is caused purely by the environment rather than by genes.
- 14th April 2002An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 15th April 2002Why do elements in the same group have similar chemical properties?
- 16th April 2002Why is the amount of product directly proportional to the amount of limiting reactant?
- 17th April 2002Give one everyday example of an endothermic process.
- 18th April 2002In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 19th April 2002A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 20th April 2002Give the equation for wave speed and its units.
- 21st April 2002A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 22nd April 2002Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 23rd April 2002A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 24th April 2002Name the type of electromagnetic wave used by a television remote control.
- 25th April 2002Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 26th April 2002Give one risk of stem cell treatment.
- 27th April 2002Why does a potometer measure water uptake rather than transpiration directly?
- 28th April 2002Why does the rate of photosynthesis fall at very high temperatures?
- 29th April 2002Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 30th April 2002Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.