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Daily Practice · GCSE Science

July 1971 5-a-day

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July 1971

31 sheets · 155 questions · GCSE

July 1971 compilationAll answers

Every sheet in July 1971

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 1971Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
  2. 2nd July 1971A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
  3. 3rd July 1971Give the equation linking energy transferred, charge flow and potential difference.
  4. 4th July 1971Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
  5. 5th July 1971State two factors, other than depth, that affect the pressure at a given point in a liquid.
  6. 6th July 1971State the name of the rule used to find the direction of the force on a current-carrying wire in a magnetic field, and name the three quantities it relates.
  7. 7th July 1971Why does taking repeat readings and calculating a mean improve the data?
  8. 8th July 1971An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
  9. 9th July 1971State two ways measles is prevented from spreading.
  10. 10th July 1971State what is meant by negative feedback.
  11. 11th July 1971Name the scientist who proposed the three-domain system of classification, and name the three domains.
  12. 12th July 1971An atom has atomic number 11 and mass number 23. State the number of protons.
  13. 13th July 1971Give two observations when lithium is added to water.
  14. 14th July 1971State the value of the Avogadro constant and what it counts.
  15. 15th July 1971State whether the combustion of methane is exothermic or endothermic.
  16. 16th July 1971State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
  17. 17th July 1971Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
  18. 18th July 1971Write the equation linking power, energy and time, and rearrange it for time.
  19. 19th July 1971Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
  20. 20th July 1971A gas is heated in a sealed rigid container. Explain what happens to the pressure.
  21. 21st July 1971A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
  22. 22nd July 1971State one medical use of X-rays and one safety precaution taken when X-rays are used in a hospital.
  23. 23rd July 1971State two uses of artificial satellites.
  24. 24th July 1971Define an undifferentiated cell.
  25. 25th July 1971Which tissue transports water and mineral ions from the roots?
  26. 26th July 1971Give three uses of the glucose produced in photosynthesis.
  27. 27th July 1971State one difference between selective breeding and genetic engineering.
  28. 28th July 1971A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
  29. 29th July 1971Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
  30. 30th July 1971Why do polymers have higher melting points than small molecules such as methane?
  31. 31st July 1971Complete: acid + metal carbonate gives ...