Daily Practice · GCSE Science
February 1968 5-a-day
Every sheet in February 1968
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1968Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 2nd February 1968Give the equation for efficiency in terms of energy.
- 3rd February 1968Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 4th February 1968A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 5th February 1968State the difference between a transverse wave and a longitudinal wave.
- 6th February 1968Name the force that keeps the planets in orbit around the Sun.
- 7th February 1968State the function of the mitochondria.
- 8th February 1968Which component of blood transports carbon dioxide, urea and hormones?
- 9th February 1968State three factors that can limit the rate of photosynthesis.
- 10th February 1968Explain why sweating cools the body down.
- 11th February 1968A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 12th February 1968Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.
- 13th February 1968Why can metals conduct electricity when solid?
- 14th February 1968Explain why aluminium cannot be extracted from aluminium oxide by heating with carbon.
- 15th February 1968State whether forming a new chemical bond requires energy or releases energy.
- 16th February 1968Name the catalyst used when an alkene reacts with hydrogen to form an alkane.
- 17th February 1968Name three greenhouse gases.
- 18th February 1968A kettle transfers 360000 J of energy in 150 s. Calculate its power in watts.
- 19th February 1968What is the difference between alternating and direct current?
- 20th February 1968What observation showed that the atom is mostly empty space?
- 21st February 1968A force of 40 N is applied 0.25 m from a pivot. Calculate the moment.
- 22nd February 1968A rectangular coil carrying a current is placed in a magnetic field, with its two long sides parallel to each other. Explain why the coil rotates rather than moving in a straight line.
- 23rd February 1968In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 24th February 1968Name the plant tissue that transports water and dissolved minerals from the roots to the leaves.
- 25th February 1968Why can HIV not be treated with antibiotics?
- 26th February 1968Define homeostasis.
- 27th February 1968Give one example of variation that is caused purely by the environment rather than by genes.
- 28th February 1968Explain, in terms of electrons, why reactivity decreases going down Group 7.
- 29th February 1968State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.