Daily Practice · GCSE Science
December 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in December 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in December 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2003Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 2nd December 2003A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 3rd December 2003State the correct SI unit for density.
- 4th December 2003A 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.
- 5th December 2003State the speed at which all electromagnetic waves travel through a vacuum.
- 6th December 2003A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
- 7th December 2003Convert 0.02 mm into micrometres (um).
- 8th December 2003State two functions of bile.
- 9th December 2003What is an antigen?
- 10th December 2003Name the two parts of the central nervous system (CNS).
- 11th December 2003Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
- 12th December 2003State one benefit of recycling metal rather than extracting new metal from its ore.
- 13th December 2003Name the three types of strong chemical bonding.
- 14th December 2003State two reasons why a percentage yield is less than 100 percent.
- 15th December 2003State what is meant by the activation energy of a reaction.
- 16th December 2003Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 17th December 2003Explain why the baseline is drawn in pencil rather than ink.
- 18th December 2003Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 19th December 2003State the equation linking potential difference, current and resistance.
- 20th December 2003Define half-life.
- 21st December 2003A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
- 22nd December 2003State the difference between a permanent magnet and an induced magnet.
- 23rd December 2003State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
- 24th December 2003Define osmosis.
- 25th December 2003State one way that pathogens can be spread from person to person.
- 26th December 2003State two things excess glucose can be converted into for storage in the human body.
- 27th December 2003Define homozygous.
- 28th December 2003A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 29th December 2003Why do isotopes of an element react in the same way?
- 30th December 2003Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 31st December 2003Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.