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Daily Practice · GCSE Science

August 1975 5-a-day

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August 1975

31 sheets · 155 questions · GCSE

August 1975 compilationAll answers

Every sheet in August 1975

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st August 1975A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
  2. 2nd August 1975Give the equation for wave speed and its units.
  3. 3rd August 1975Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
  4. 4th August 1975Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
  5. 5th August 1975A ball decelerates uniformly from 18 m/s to 0 m/s over a distance of 2.7 m while being caught. Using (final velocity)^2 = (initial velocity)^2 + 2 x acceleration x distance, calculate its deceleration.
  6. 6th August 1975An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
  7. 7th August 1975A satellite in a stable, small-radius, close orbit around the Earth is compared with a satellite in a stable, large-radius, distant orbit. State which of the two satellites has the greater orbital speed.
  8. 8th August 1975Give one risk of stem cell treatment.
  9. 9th August 1975Why does a potometer measure water uptake rather than transpiration directly?
  10. 10th August 1975Why does the rate of photosynthesis fall at very high temperatures?
  11. 11th August 1975Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
  12. 12th August 1975Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
  13. 13th August 1975State the four stages considered in a life cycle assessment.
  14. 14th August 1975Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
  15. 15th August 1975Define oxidation in terms of electrons.
  16. 16th August 1975State two units that the rate of a reaction can be measured in.
  17. 17th August 1975Name the two methods used to produce ethanol industrially.
  18. 18th August 1975Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
  19. 19th August 1975A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
  20. 20th August 1975State the correct SI unit for density.
  21. 21st August 1975A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
  22. 22nd August 1975State whether sound waves are transverse or longitudinal.
  23. 23rd August 1975State the name of the component at the centre of a transformer's primary and secondary coils, and state its purpose.
  24. 24th August 1975Convert 0.02 mm into micrometres (um).
  25. 25th August 1975State two functions of bile.
  26. 26th August 1975What is an antigen?
  27. 27th August 1975State why a reflex action is described as involuntary.
  28. 28th August 1975A student counts 3, 5, 4 and 8 dandelion plants in four separate 1 m^2 quadrats. Calculate the mean number of dandelions per quadrat.
  29. 29th August 1975State one benefit of recycling metal rather than extracting new metal from its ore.
  30. 30th August 1975Name the three types of strong chemical bonding.
  31. 31st August 1975State two reasons why a percentage yield is less than 100 percent.