Daily Practice · GCSE Science
December 1989 5-a-day
Every sheet in December 1989
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1989State the equation that links pressure, force and area.
- 2nd December 1989In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
- 3rd December 1989Why must the same volume of solution be used in every tube in an enzyme investigation?
- 4th December 1989State two ways that bile aids the digestion of fats.
- 5th December 1989Describe the symptoms of rose black spot and its effect on the plant.
- 6th December 1989Name the gland that monitors and controls blood glucose concentration.
- 7th December 1989Explain why genetic engineering can introduce a new characteristic in a single generation, while selective breeding cannot.
- 8th December 1989State the relative charge of a neutron.
- 9th December 1989Why did Mendeleev leave gaps in his table?
- 10th December 1989Calculate the mass of 0.25 mol of sodium hydroxide, NaOH. (Na = 23, O = 16, H = 1)
- 11th December 1989A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
- 12th December 1989State the two named reactants used in the Haber process.
- 13th December 1989State the flame test colour for sodium ions.
- 14th December 1989Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 15th December 1989A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.
- 16th December 1989A 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 1989A ball decelerates uniformly from 18 m/s to 0 m/s over a distance of 2.7 m while being caught. Using (final velocity)^2 = (initial velocity)^2 + 2 x acceleration x distance, calculate its deceleration.
- 18th December 1989An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
- 19th December 1989A satellite in a stable, small-radius, close orbit around the Earth is compared with a satellite in a stable, large-radius, distant orbit. State which of the two satellites has the greater orbital speed.
- 20th December 1989State three functions of mitosis.
- 21st December 1989What happens to guard cells when a plant is short of water?
- 22nd December 1989Write the word equation for photosynthesis.
- 23rd December 1989Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 24th December 1989State one method used to try to maintain biodiversity.
- 25th December 1989Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 26th December 1989Why is graphite soft and slippery?
- 27th December 1989Explain the difference between a strong acid and a concentrated acid.
- 28th December 1989A 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 1989Name the two methods used to produce ethanol industrially.
- 30th December 1989Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 31st December 1989Name four energy stores.