Daily Practice · GCSE Science
October 1976 5-a-day
Every sheet in October 1976
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1976Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 2nd October 1976What happens to the energy described as 'wasted' in a transfer?
- 3rd October 1976A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 4th October 1976Explain the difference between irradiation and contamination.
- 5th October 1976Name the type of electromagnetic wave used to sterilise medical equipment.
- 6th October 1976A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 7th October 1976A 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.
- 8th October 1976Name the products of protein digestion.
- 9th October 1976State the difference between an antibiotic and a painkiller.
- 10th October 1976Explain why reflex responses are faster than voluntary responses.
- 11th October 1976Define community, in ecological terms.
- 12th October 1976Name the four stages usually considered in a life cycle assessment of a product.
- 13th October 1976A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 14th October 1976Convert 250 cubic centimetres into cubic decimetres.
- 15th October 1976A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
- 16th October 1976Name the two industrial methods of cracking.
- 17th October 1976Write the formula for calculating an Rf value.
- 18th October 1976Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
- 19th October 1976What happens to the total resistance when a second resistor is added in parallel, and why?
- 20th October 1976What happens inside the nucleus when a beta particle is emitted?
- 21st October 1976Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 22nd October 1976State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 23rd October 1976State what red-shift shows about the motion of most distant galaxies.
- 24th October 1976State three factors that increase the rate of diffusion.
- 25th October 1976Which type of pathogen causes athlete's foot, a fungal skin infection?
- 26th October 1976State the word equation for aerobic respiration.
- 27th October 1976State one ethical concern raised by embryo screening.
- 28th October 1976What does 'concordant' mean when applied to titres?
- 29th October 1976What did the alpha scattering experiment show that the plum pudding model could not explain?
- 30th October 1976Magnesium is burned in an open crucible and the mass increases. Explain why.
- 31st October 1976State the name given to the negative electrode in electrolysis.