Daily Practice · GCSE Science
September 1972 5-a-day
Every sheet in September 1972
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1972A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 2nd September 1972A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 3rd September 1972Define the term 'vector quantity' and give one example.
- 4th September 1972Name the type of electromagnetic wave used to treat cancer by killing cells in a tumour, and state which part of the atom emits it.
- 5th September 1972State one difference between a moon and an artificial satellite.
- 6th September 1972State three functions of mitosis.
- 7th September 1972What happens to guard cells when a plant is short of water?
- 8th September 1972Write the word equation for photosynthesis.
- 9th September 1972Define phenotype.
- 10th September 1972State one method used to try to maintain biodiversity.
- 11th September 1972Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 12th September 1972Why is graphite soft and slippery?
- 13th September 1972Explain the difference between a strong acid and a concentrated acid.
- 14th September 1972A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 15th September 1972Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 16th September 1972Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 17th September 1972Name four energy stores.
- 18th September 1972A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 19th September 1972State one source of natural background radiation and one source of artificial (man-made) background radiation.
- 20th September 1972A radio wave has a wavelength of 3 m. Calculate its frequency, given that all electromagnetic waves travel at 3 x 10^8 m/s in a vacuum.
- 21st September 1972Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.
- 22nd September 1972A 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 September 1972What is an enzyme?
- 24th September 1972Describe phagocytosis.
- 25th September 1972Name the chemical released at a synapse that carries the signal across the gap.
- 26th September 1972Explain why deforestation to create land for cattle grazing can reduce biodiversity.
- 27th September 1972Name the four stages usually considered in a life cycle assessment of a product.
- 28th September 1972A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 29th September 1972Give the formula for percentage yield.
- 30th September 1972A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.