Daily Practice · GCSE Science
March 1978 5-a-day
Every sheet in March 1978
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1978Which type of pathogen causes athlete's foot, a fungal skin infection?
- 2nd March 1978Define oxygen debt.
- 3rd March 1978Explain one benefit of the Human Genome Project.
- 4th March 1978Name one way to make a rate of reaction experiment more valid rather than simply more precise.
- 5th March 1978Define an isotope.
- 6th March 1978A sealed flask containing 12.0 g of reactants is shaken and a reaction occurs. What is the total mass afterwards?
- 7th March 1978Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
- 8th March 1978In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
- 9th March 1978State the difference between a pure substance and a formulation.
- 10th March 1978Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
- 11th March 1978Name three renewable energy resources.
- 12th March 1978State the equation for density.
- 13th March 1978A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
- 14th March 1978A wave travels from air into glass and slows down. State what happens to its direction, and explain why in terms of wavelength.
- 15th March 1978State what a nebula is, and explain its role in the life cycle of a star.
- 16th March 1978Why is a stain such as iodine used when preparing a slide?
- 17th March 1978Give two adaptations of a red blood cell.
- 18th March 1978Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 19th March 1978Name the hormone released by the adrenal glands that prepares the body for fight or flight.
- 20th March 1978Explain why a pyramid of biomass is never wider at the top than at the bottom.
- 21st March 1978State what is meant by sustainable development.
- 22nd March 1978Define a covalent bond.
- 23rd March 1978State the pH value of a neutral solution.
- 24th March 1978State the difference between a rechargeable cell and a non-rechargeable cell.
- 25th March 1978State the general formula of the alkenes.
- 26th March 1978Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 27th March 1978A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 28th March 1978Calculate the current drawn by a 1150 W kettle on a 230 V supply.
- 29th March 1978State the approximate radius of a nucleus compared with the radius of an atom.
- 30th March 1978A box of weight 120 N has a base area of 0.40 m^2. Calculate the pressure it exerts on the ground.
- 31st March 1978Explain why a current-carrying wire positioned exactly parallel to a magnetic field experiences no force.