Daily Practice · GCSE Science
March 1988 5-a-day
Every sheet in March 1988
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1988A 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.
- 2nd March 1988An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
- 3rd March 1988A 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.
- 4th March 1988Give one risk of stem cell treatment.
- 5th March 1988Why does a potometer measure water uptake rather than transpiration directly?
- 6th March 1988Why does the rate of photosynthesis fall at very high temperatures?
- 7th March 1988Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 8th March 1988Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 9th March 1988State the four stages considered in a life cycle assessment.
- 10th March 1988Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 11th March 1988Define oxidation in terms of electrons.
- 12th March 1988State two units that the rate of a reaction can be measured in.
- 13th March 1988Name the two methods used to produce ethanol industrially.
- 14th March 1988Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 15th March 1988A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 16th March 1988A 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.
- 17th March 1988A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 18th March 1988State whether sound waves are transverse or longitudinal.
- 19th March 1988State the name of the component at the centre of a transformer's primary and secondary coils, and state its purpose.
- 20th March 1988State one structure found in a bacterial cell but not in an animal cell.
- 21st March 1988State two functions of bile.
- 22nd March 1988What is an antigen?
- 23rd March 1988State why a reflex action is described as involuntary.
- 24th March 1988A student counts 3, 5, 4 and 8 dandelion plants in four separate 1 m^2 quadrats. Calculate the mean number of dandelions per quadrat.
- 25th March 1988Define a finite resource, giving one example.
- 26th March 1988State one reason why simple covalent substances such as chlorine have low melting points.
- 27th March 1988State two reasons why a percentage yield is less than 100 percent.
- 28th March 1988State what is meant by the activation energy of a reaction.
- 29th March 1988State what happens to the boiling point of hydrocarbons as their chain length increases.
- 30th March 1988Explain why the baseline is drawn in pencil rather than ink.
- 31st March 1988Give one reason for taking the gradient from the line of best fit rather than from two data points.