Daily Practice · GCSE Science
March 1977 5-a-day
Every sheet in March 1977
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1977A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 2nd March 1977Name the type of electromagnetic wave used by a television remote control.
- 3rd March 1977Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 4th March 1977Give one risk of stem cell treatment.
- 5th March 1977Why does a potometer measure water uptake rather than transpiration directly?
- 6th March 1977Why does the rate of photosynthesis fall at very high temperatures?
- 7th March 1977Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 8th March 1977Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 9th March 1977State the four stages considered in a life cycle assessment.
- 10th March 1977Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 11th March 1977Define oxidation in terms of electrons.
- 12th March 1977State two units that the rate of a reaction can be measured in.
- 13th March 1977Name the carboxylic acid produced when ethanol is oxidised.
- 14th March 1977State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 15th March 1977A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 16th March 1977Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 17th March 1977A 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.
- 18th March 1977Define the term 'wavelength' of a wave.
- 19th March 1977State the difference between an alternator and a dynamo.
- 20th March 1977Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 21st March 1977State two functions of bile.
- 22nd March 1977What is an antigen?
- 23rd March 1977State the type of effector that produces a physical response by contracting.
- 24th March 1977Give one example of a biotic factor that could affect a population of rabbits.
- 25th March 1977Name two methods of desalinating seawater.
- 26th March 1977Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 27th March 1977State two reasons why a percentage yield is less than 100 percent.
- 28th March 1977State what is meant by the activation energy of a reaction.
- 29th March 1977Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 30th March 1977Explain why the baseline is drawn in pencil rather than ink.
- 31st March 1977Give one reason for taking the gradient from the line of best fit rather than from two data points.