Daily Practice · GCSE Science
October 1955 5-a-day
Every sheet in October 1955
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1955Sound waves travel through a steel rail at approximately 5900 m/s. A sound wave sent along the rail has a frequency of 2950 Hz. Calculate its wavelength.
- 2nd October 1955State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 3rd October 1955Convert 0.05 mm into micrometres.
- 4th October 1955State the function of the valves in the heart and in veins.
- 5th October 1955Name the gas that is released as a product of photosynthesis.
- 6th October 1955Name the gland often called the body's master gland.
- 7th October 1955The 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 1955Explain why potable water is not required to be chemically pure.
- 9th October 1955Write the formula of calcium chloride and explain the ratio.
- 10th October 1955State the name given to a reaction in which a substance loses electrons.
- 11th October 1955Hydrogen 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 1955State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
- 13th October 1955Give two processes that removed carbon dioxide from the early atmosphere.
- 14th October 1955Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 15th October 1955Give the equation linking energy transferred, charge flow and potential difference.
- 16th October 1955Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 17th October 1955State the equation that links pressure, force and area.
- 18th October 1955In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
- 19th October 1955Why does taking repeat readings and calculating a mean improve the data?
- 20th October 1955Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 21st October 1955State two ways measles is prevented from spreading.
- 22nd October 1955Name the gland that monitors and controls blood glucose concentration.
- 23rd October 1955Explain why genetic engineering can introduce a new characteristic in a single generation, while selective breeding cannot.
- 24th October 1955Write the electronic structure of an atom with 12 electrons.
- 25th October 1955Give two observations when lithium is added to water.
- 26th October 1955State the value of the Avogadro constant and what it counts.
- 27th October 1955A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 28th October 1955State the two named reactants used in the Haber process.
- 29th October 1955Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 30th October 1955Write the equation linking power, energy and time, and rearrange it for time.
- 31st October 1955State the UK mains supply frequency and typical potential difference.