Daily Practice · GCSE Science
October 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2003State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 2nd October 2003State what red-shift shows about the motion of most distant galaxies.
- 3rd October 2003Give one adaptation of a root hair cell for absorbing mineral ions.
- 4th October 2003Which type of pathogen causes athlete's foot, a fungal skin infection?
- 5th October 2003State the word equation for aerobic respiration.
- 6th October 2003State one ethical concern raised by embryo screening.
- 7th October 2003Why is a polystyrene cup with a lid used in energy-change experiments?
- 8th October 2003Write the electronic structure of a magnesium atom (12 electrons).
- 9th October 2003A student measures the mass of a beaker of hydrochloric acid and marble chips as they react and finds it falls. Explain why.
- 10th October 2003State the name given to the negative electrode in electrolysis.
- 11th October 2003Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 12th October 2003Name the gas that relights a glowing splint.
- 13th October 2003Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 14th October 2003Define power and give its unit.
- 15th October 2003Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 16th October 2003A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
- 17th October 2003Explain, in terms of particle motion, why a wave can transfer energy without transferring matter.
- 18th October 2003Name the region of the Solar System where most asteroids are found.
- 19th October 2003Give one advantage of a light microscope over an electron microscope.
- 20th October 2003Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 21st October 2003Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 22nd October 2003A person's blood glucose concentration is 4.8 mmol/dm^3 before breakfast and 7.2 mmol/dm^3 after breakfast. Calculate the increase in blood glucose concentration.
- 23rd October 2003Thermus aquaticus is a species of bacterium that lives in hot springs at temperatures that would kill most other organisms. State the name given to an organism that is adapted to survive in such extreme conditions.
- 24th October 2003State what is meant by sustainable development.
- 25th October 2003Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 26th October 2003State the pH value of a neutral solution.
- 27th October 2003State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 28th October 2003Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 29th October 2003Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 30th October 2003A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 31st October 2003Give the colour and function of the earth wire.