Daily Practice · GCSE Science
September 1973 5-a-day
Every sheet in September 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1973State, in one sentence, what the Big Bang model proposes about the early universe.
- 2nd September 1973State three factors that increase the rate of diffusion.
- 3rd September 1973Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
- 4th September 1973A yeast culture respires without oxygen. Name the two products of this reaction, and name one industrial process that relies on it.
- 5th September 1973A man who is a known carrier of cystic fibrosis (Ff) has children with a woman who has been confirmed to carry no cystic fibrosis allele at all (FF). Explain why none of their children can have cystic fibrosis.
- 6th September 1973What does 'concordant' mean when applied to titres?
- 7th September 1973What did the alpha scattering experiment show that the plum pudding model could not explain?
- 8th September 1973Magnesium is burned in an open crucible and the mass increases. Explain why.
- 9th September 1973Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
- 10th September 1973Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 11th September 1973Describe the result of the test for carbon dioxide.
- 12th September 1973Give one piece of evidence used to link human activity to recent climate change.
- 13th September 1973Give one advantage and one disadvantage of wind power.
- 14th September 1973Why does the temperature stay constant while a substance boils?
- 15th September 1973A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 16th September 1973Sound 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.
- 17th September 1973State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 18th September 1973Where is the DNA found in a bacterial cell?
- 19th September 1973Name the substance in red blood cells that binds oxygen.
- 20th September 1973A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.
- 21st September 1973Name the gland often called the body's master gland.
- 22nd September 1973In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
- 23rd September 1973Classify crude oil as finite or renewable, and justify your answer.
- 24th September 1973Give the charge on an ion formed by a group 2 element.
- 25th September 1973Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 26th September 1973State one factor that affects the size of the voltage produced by a chemical cell.
- 27th September 1973State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
- 28th September 1973Give two human activities that increase the amount of greenhouse gases in the atmosphere.
- 29th September 1973A 5.0 kg object is lifted 3.0 m. Calculate its gain in gravitational potential energy (g = 9.8 N/kg).
- 30th September 1973Why is the live wire dangerous even when a device is switched off?