Daily Practice · GCSE Science
August 1987 5-a-day
Every sheet in August 1987
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1987Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 2nd August 1987State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 3rd August 1987State what red-shift shows about the motion of most distant galaxies.
- 4th August 1987Why does active transport require energy?
- 5th August 1987Which type of pathogen causes athlete's foot, a fungal skin infection?
- 6th August 1987State the word equation for aerobic respiration.
- 7th August 1987State one ethical concern raised by embryo screening.
- 8th August 1987Name one way to make a rate of reaction experiment more valid rather than simply more precise.
- 9th August 1987Define an isotope.
- 10th August 1987A sealed flask containing 12.0 g of reactants is shaken and a reaction occurs. What is the total mass afterwards?
- 11th August 1987State the name given to the negative electrode in electrolysis.
- 12th August 1987Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 13th August 1987State the difference between a pure substance and a formulation.
- 14th August 1987Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
- 15th August 1987Name three renewable energy resources.
- 16th August 1987State the equation for density.
- 17th August 1987A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
- 18th August 1987Explain, in terms of particle motion, why a wave can transfer energy without transferring matter.
- 19th August 1987Name the region of the Solar System where most asteroids are found.
- 20th August 1987Why is a stain such as iodine used when preparing a slide?
- 21st August 1987Give two adaptations of a red blood cell.
- 22nd August 1987Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 23rd August 1987A 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.
- 24th August 1987Explain why a pyramid of biomass is never wider at the top than at the bottom.
- 25th August 1987State what is meant by sustainable development.
- 26th August 1987Define a covalent bond.
- 27th August 1987State the pH value of a neutral solution.
- 28th August 1987State the difference between a rechargeable cell and a non-rechargeable cell.
- 29th August 1987Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 30th August 1987Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 31st August 1987A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.