Daily Practice · GCSE Science
December 1959 5-a-day
Every sheet in December 1959
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1959A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 2nd December 1959A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 3rd December 1959A 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 1959Explain why ultraviolet radiation can be harmful to human skin.
- 5th December 1959State two ways of inducing a potential difference across a conductor using a magnetic field.
- 6th December 1959State one structure found in a bacterial cell but not in an animal cell.
- 7th December 1959State two functions of bile.
- 8th December 1959What is an antigen?
- 9th December 1959A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 10th December 1959Name the equipment used to measure the abundance of a small plant species within a sample area.
- 11th December 1959Define a finite resource, giving one example.
- 12th December 1959State one reason why simple covalent substances such as chlorine have low melting points.
- 13th December 1959State two reasons why a percentage yield is less than 100 percent.
- 14th December 1959State what is meant by the activation energy of a reaction.
- 15th December 1959Define the term 'hydrocarbon'.
- 16th December 1959Explain why the baseline is drawn in pencil rather than ink.
- 17th December 1959Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 18th December 1959State the equation linking potential difference, current and resistance.
- 19th December 1959Define half-life.
- 20th December 1959A shopping trolley has a mass of 25 kg. Calculate its weight, taking g = 9.8 N/kg.
- 21st December 1959A student wraps a coil of insulated wire around an iron nail and connects it to a battery. Name the device this creates, and state one way to increase its magnetic field strength.
- 22nd December 1959Explain why red-shift observations support the idea that the universe is expanding, rather than Earth simply being at the centre of the universe with everything moving away from it.
- 23rd December 1959Define osmosis.
- 24th December 1959A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 25th December 1959Explain, in terms of respiration, why a build-up of lactic acid causes muscle fatigue during vigorous exercise.
- 26th December 1959A man has genotype XY. State his sex, and state which sex chromosomes are found in the sperm cells he produces.
- 27th December 1959A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 28th December 1959Why do isotopes of an element react in the same way?
- 29th December 1959Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 30th December 1959In the industrial extraction of aluminium, explain why the aluminium oxide is dissolved in molten cryolite rather than melted on its own.
- 31st December 1959Explain why increasing the surface area of a solid reactant increases the rate of a reaction.