Daily Practice · GCSE Science
June 1981 5-a-day
Every sheet in June 1981
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1981State what is meant by dynamic equilibrium.
- 2nd June 1981Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
- 3rd June 1981State the equation for work done.
- 4th June 1981State the UK mains supply frequency and typical potential difference.
- 5th June 1981State the relationship between pressure and volume for a fixed mass of gas at constant temperature.
- 6th June 1981A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 7th June 1981State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 8th June 1981State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 9th June 1981Where in a plant are stem cells found?
- 10th June 1981Name the process by which dissolved sugars are transported in the phloem.
- 11th June 1981Why is photosynthesis described as endothermic?
- 12th June 1981Define the term allele.
- 13th June 1981State one human activity that reduces the amount of land available for other organisms.
- 14th June 1981State the two substances that must both be present for iron to rust.
- 15th June 1981State the size range of a nanoparticle.
- 16th June 1981Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 17th June 1981Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 18th June 1981Explain why carboxylic acids are described as 'weak acids'.
- 19th June 1981Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 20th June 1981What happens to the energy described as 'wasted' in a transfer?
- 21st June 1981A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 22nd June 1981Explain the difference between irradiation and contamination.
- 23rd June 1981Explain why ultraviolet radiation can be harmful to human skin.
- 24th June 1981State two ways of inducing a potential difference across a conductor using a magnetic field.
- 25th June 1981State one structure found in a bacterial cell but not in an animal cell.
- 26th June 1981Name the products of protein digestion.
- 27th June 1981State the difference between an antibiotic and a painkiller.
- 28th June 1981A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 29th June 1981Name the equipment used to measure the abundance of a small plant species within a sample area.
- 30th June 1981Define a finite resource, giving one example.