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Daily Practice · GCSE Science

July 1975 5-a-day

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July 1975

31 sheets · 155 questions · GCSE

July 1975 compilationAll answers

Every sheet in July 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 July 1975Define power and give its unit.
  2. 2nd July 1975Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
  3. 3rd July 1975A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
  4. 4th July 1975Sound waves travel through a steel rail at approximately 5900 m/s. A sound wave sent along the rail has a frequency of 2950 Hz. Calculate its wavelength.
  5. 5th July 1975State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
  6. 6th July 1975Give one advantage of a light microscope over an electron microscope.
  7. 7th July 1975Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
  8. 8th July 1975Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
  9. 9th July 1975Name the gland often called the body's master gland.
  10. 10th July 1975Thermus aquaticus is a species of bacterium that lives in hot springs at temperatures that would kill most other organisms. State the name given to an organism that is adapted to survive in such extreme conditions.
  11. 11th July 1975State what is meant by sustainable development.
  12. 12th July 1975Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
  13. 13th July 1975State the pH value of a neutral solution.
  14. 14th July 1975State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
  15. 15th July 1975State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
  16. 16th July 1975Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
  17. 17th July 1975A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
  18. 18th July 1975Give the colour and function of the earth wire.
  19. 19th July 1975What observation showed the nucleus is positively charged and very small?
  20. 20th July 1975State the equation that links pressure, force and area.
  21. 21st July 1975In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
  22. 22nd July 1975A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
  23. 23rd July 1975An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
  24. 24th July 1975Give one way of reducing the spread of malaria.
  25. 25th July 1975Name the gland that monitors and controls blood glucose concentration.
  26. 26th July 1975Explain why genetic engineering can introduce a new characteristic in a single generation, while selective breeding cannot.
  27. 27th July 1975An atom has atomic number 11 and mass number 23. State the number of protons.
  28. 28th July 1975Why do elements in the same group have similar chemical properties?
  29. 29th July 1975Why is the amount of product directly proportional to the amount of limiting reactant?
  30. 30th July 1975State whether the combustion of methane is exothermic or endothermic.
  31. 31st July 1975State the two named reactants used in the Haber process.