Daily Practice · GCSE Science
March 1955 5-a-day
Every sheet in March 1955
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1955State what the gradient of a distance-time graph represents.
- 2nd March 1955Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 3rd March 1955Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 4th March 1955Give one risk of stem cell treatment.
- 5th March 1955Why does a potometer measure water uptake rather than transpiration directly?
- 6th March 1955Why does the rate of photosynthesis fall at very high temperatures?
- 7th March 1955In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 8th March 1955Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 9th March 1955State the four stages considered in a life cycle assessment.
- 10th March 1955Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 11th March 1955Define oxidation in terms of electrons.
- 12th March 1955State two units that the rate of a reaction can be measured in.
- 13th March 1955State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 14th March 1955Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 15th March 1955A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 16th March 1955A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 17th March 1955A 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 1955Name the type of electromagnetic wave used to sterilise medical equipment.
- 19th March 1955A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 20th March 1955A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 21st March 1955State two functions of bile.
- 22nd March 1955What is an antigen?
- 23rd March 1955Explain why reflex responses are faster than voluntary responses.
- 24th March 1955Define community, in ecological terms.
- 25th March 1955Name the four stages usually considered in a life cycle assessment of a product.
- 26th March 1955A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 27th March 1955State two reasons why a percentage yield is less than 100 percent.
- 28th March 1955State what is meant by the activation energy of a reaction.
- 29th March 1955Name the two industrial methods of cracking.
- 30th March 1955Explain why the baseline is drawn in pencil rather than ink.
- 31st March 1955Give one reason for taking the gradient from the line of best fit rather than from two data points.