Daily Practice · GCSE Science
March 1980 5-a-day
Every sheet in March 1980
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1980Why should a line of best fit be drawn rather than joining the plotted points?
- 2nd March 1980In a parallel circuit, how do the branch currents relate to the total current?
- 3rd March 1980State the approximate radius of an atom.
- 4th March 1980State Newton's First Law of Motion.
- 5th March 1980Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
- 6th March 1980State what is meant by red-shift.
- 7th March 1980Give one adaptation of a root hair cell for absorbing mineral ions.
- 8th March 1980A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 9th March 1980Explain why breathing rate and breathing depth both increase during exercise.
- 10th March 1980In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 11th March 1980Why is a polystyrene cup with a lid used in energy-change experiments?
- 12th March 1980Write the electronic structure of a magnesium atom (12 electrons).
- 13th March 1980A student measures the mass of a beaker of hydrochloric acid and marble chips as they react and finds it falls. Explain why.
- 14th March 1980State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 15th March 1980Explain how a catalyst increases the rate of a reaction without being used up.
- 16th March 1980Name the gas that relights a glowing splint.
- 17th March 1980Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 18th March 1980Define power and give its unit.
- 19th March 1980Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 20th March 1980A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 21st March 1980Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
- 22nd March 1980State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
- 23rd March 1980Give one advantage of a light microscope over an electron microscope.
- 24th March 1980Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 25th March 1980State three factors that can limit the rate of photosynthesis.
- 26th March 1980Explain why type 1 diabetes is treated with insulin injections rather than tablets.
- 27th March 1980Thermus 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.
- 28th March 1980Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.
- 29th March 1980Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 30th March 1980Explain why aluminium cannot be extracted from aluminium oxide by heating with carbon.
- 31st March 1980State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.