Daily Practice · GCSE Science
December 1978 5-a-day
Every sheet in December 1978
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1978A force of 40 N is applied 0.25 m from a pivot. Calculate the moment.
- 2nd December 1978A rectangular coil carrying a current is placed in a magnetic field, with its two long sides parallel to each other. Explain why the coil rotates rather than moving in a straight line.
- 3rd December 1978Why must the same volume of solution be used in every tube in an enzyme investigation?
- 4th December 1978Name the plant tissue that transports water and dissolved minerals from the roots to the leaves.
- 5th December 1978Describe the symptoms of rose black spot and its effect on the plant.
- 6th December 1978Define homeostasis.
- 7th December 1978Give one example of variation that is caused purely by the environment rather than by genes.
- 8th December 1978Explain, in terms of electrons, why reactivity decreases going down Group 7.
- 9th December 1978Why did Mendeleev leave gaps in his table?
- 10th December 1978Calculate the mass of 0.25 mol of sodium hydroxide, NaOH. (Na = 23, O = 16, H = 1)
- 11th December 1978Explain, in terms of bonds, why breaking bonds is an endothermic process.
- 12th December 1978In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 13th December 1978State the flame test colour for sodium ions.
- 14th December 1978Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 15th December 1978In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
- 16th December 1978A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 17th December 1978A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 18th December 1978Name the type of electromagnetic wave used by a television remote control.
- 19th December 1978Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 20th December 1978State three functions of mitosis.
- 21st December 1978What happens to guard cells when a plant is short of water?
- 22nd December 1978Write the word equation for photosynthesis.
- 23rd December 1978Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 24th December 1978State one method used to try to maintain biodiversity.
- 25th December 1978Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 26th December 1978Why is graphite soft and slippery?
- 27th December 1978Explain the difference between a strong acid and a concentrated acid.
- 28th December 1978A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 29th December 1978Name the carboxylic acid produced when ethanol is oxidised.
- 30th December 1978Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 31st December 1978Name four energy stores.