Daily Practice · GCSE Science
December 1992 5-a-day
Every sheet in December 1992
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1992A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 2nd December 1992A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 3rd December 1992A 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.
- 4th December 1992Name the type of electromagnetic wave used to sterilise medical equipment.
- 5th December 1992A 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.
- 6th December 1992A 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.
- 7th December 1992State two functions of bile.
- 8th December 1992What is an antigen?
- 9th December 1992Explain why reflex responses are faster than voluntary responses.
- 10th December 1992Define community, in ecological terms.
- 11th December 1992Name the four stages usually considered in a life cycle assessment of a product.
- 12th December 1992A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 13th December 1992State two reasons why a percentage yield is less than 100 percent.
- 14th December 1992State what is meant by the activation energy of a reaction.
- 15th December 1992Name the two industrial methods of cracking.
- 16th December 1992Explain why the baseline is drawn in pencil rather than ink.
- 17th December 1992Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 18th December 1992State the equation linking potential difference, current and resistance.
- 19th December 1992Define half-life.
- 20th December 1992Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 21st December 1992State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 22nd December 1992State what red-shift shows about the motion of most distant galaxies.
- 23rd December 1992Define osmosis.
- 24th December 1992Which type of pathogen causes athlete's foot, a fungal skin infection?
- 25th December 1992State the word equation for aerobic respiration.
- 26th December 1992State one ethical concern raised by embryo screening.
- 27th December 1992A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 28th December 1992Why do isotopes of an element react in the same way?
- 29th December 1992Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 30th December 1992State the name given to the negative electrode in electrolysis.
- 31st December 1992Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.