Daily Practice · GCSE Science
September 1970 5-a-day
Every sheet in September 1970
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1970A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 2nd September 1970Define the term allele.
- 3rd September 1970Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 4th September 1970State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 5th September 1970Explain why graphite conducts electricity but diamond does not.
- 6th September 1970State what is observed when magnesium ribbon is added to copper sulfate solution.
- 7th September 1970State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 8th September 1970Explain why carboxylic acids are described as 'weak acids'.
- 9th September 1970Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 10th September 1970Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 11th September 1970A 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.
- 12th September 1970Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 13th September 1970Explain why ultraviolet radiation can be harmful to human skin.
- 14th September 1970State two ways of inducing a potential difference across a conductor using a magnetic field.
- 15th September 1970State one structure found in a bacterial cell but not in an animal cell.
- 16th September 1970Where is bile made and where is it stored?
- 17th September 1970Why does a vaccinated person not usually become ill when they meet the pathogen?
- 18th September 1970A 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.
- 19th September 1970Name the equipment used to measure the abundance of a small plant species within a sample area.
- 20th September 1970Define a finite resource, giving one example.
- 21st September 1970State one reason why simple covalent substances such as chlorine have low melting points.
- 22nd September 1970Calculate the concentration in moles per cubic decimetre of a solution containing 0.5 mol in 250 cubic centimetres.
- 23rd September 1970State the energy transfer that occurs during an endothermic reaction.
- 24th September 1970Define the term 'hydrocarbon'.
- 25th September 1970A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
- 26th September 1970Why should a line of best fit be drawn rather than joining the plotted points?
- 27th September 1970In a parallel circuit, how do the branch currents relate to the total current?
- 28th September 1970State the approximate radius of an atom.
- 29th September 1970A shopping trolley has a mass of 25 kg. Calculate its weight, taking g = 9.8 N/kg.
- 30th September 1970A student wraps a coil of insulated wire around an iron nail and connects it to a battery. Name the device this creates, and state one way to increase its magnetic field strength.