Daily Practice · GCSE Science
October 1977 5-a-day
Every sheet in October 1977
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1977A wave has a period of 0.005 s. Calculate its frequency.
- 2nd October 1977State the difference between a natural satellite and an artificial satellite, and give one example of each.
- 3rd October 1977Convert 0.05 mm into micrometres.
- 4th October 1977State the function of the valves in the heart and in veins.
- 5th October 1977A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.
- 6th October 1977Name the hormone that causes the liver to convert stored glycogen back into glucose.
- 7th October 1977The Arctic fox has small, rounded ears compared with the desert fennec fox, which has very large ears. State whether this is a structural, behavioural or functional adaptation, and explain how it helps the Arctic fox survive.
- 8th October 1977Classify crude oil as finite or renewable, and justify your answer.
- 9th October 1977Write the formula of calcium chloride and explain the ratio.
- 10th October 1977Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 11th October 1977Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
- 12th October 1977State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 13th October 1977Give two human activities that increase the amount of greenhouse gases in the atmosphere.
- 14th October 1977A 5.0 kg object is lifted 3.0 m. Calculate its gain in gravitational potential energy (g = 9.8 N/kg).
- 15th October 1977Give the equation linking energy transferred, charge flow and potential difference.
- 16th October 1977Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 17th October 1977Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
- 18th October 1977State the three factors needed for a current-carrying wire to experience a force due to the motor effect.
- 19th October 1977Why does taking repeat readings and calculating a mean improve the data?
- 20th October 1977State two ways that bile aids the digestion of fats.
- 21st October 1977State two ways measles is prevented from spreading.
- 22nd October 1977A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
- 23rd October 1977Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
- 24th October 1977State the relative charge of a neutron.
- 25th October 1977Give two observations when lithium is added to water.
- 26th October 1977State the value of the Avogadro constant and what it counts.
- 27th October 1977A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
- 28th October 1977State what is meant by dynamic equilibrium.
- 29th October 1977Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 30th October 1977Write the equation linking power, energy and time, and rearrange it for time.
- 31st October 1977A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.