Daily Practice · GCSE Science
October 1980 5-a-day
Every sheet in October 1980
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1980A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 2nd October 1980What causes the pressure of a gas on the walls of its container?
- 3rd October 1980A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 4th October 1980Name the type of electromagnetic wave used by a television remote control.
- 5th October 1980Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 6th October 1980Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 7th October 1980Why are xylem cells strengthened with lignin?
- 8th October 1980Why is glucose converted into starch for storage?
- 9th October 1980Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 10th October 1980State one way in which high biodiversity benefits an ecosystem.
- 11th October 1980Explain how painting an iron gate helps prevent it from rusting.
- 12th October 1980Why can an ionic solid not conduct electricity?
- 13th October 1980Name the salt made from zinc oxide and nitric acid.
- 14th October 1980State what is meant by a catalyst.
- 15th October 1980Name the carboxylic acid produced when ethanol is oxidised.
- 16th October 1980Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 17th October 1980Define specific heat capacity.
- 18th October 1980A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 19th October 1980State the number of protons and the number of neutrons in an alpha particle.
- 20th October 1980Define the term 'wavelength' of a wave.
- 21st October 1980State the difference between an alternator and a dynamo.
- 22nd October 1980A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 23rd October 1980Why does a food test for sugars need a water bath?
- 24th October 1980Explain what is meant by a double blind trial.
- 25th October 1980State the type of effector that produces a physical response by contracting.
- 26th October 1980Give one example of a biotic factor that could affect a population of rabbits.
- 27th October 1980Name the four stages usually considered in a life cycle assessment of a product.
- 28th October 1980A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 29th October 1980Give the formula for atom economy.
- 30th October 1980Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 31st October 1980Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O