Daily Practice · GCSE Science
December 1974 5-a-day
Every sheet in December 1974
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1974How is the temperature of a gas related to the motion of its molecules?
- 2nd December 1974State what the gradient of a distance-time graph represents.
- 3rd December 1974Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 4th December 1974Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 5th December 1974How many pairs of chromosomes are there in a human body cell?
- 6th December 1974Where are most stomata found on a typical leaf, and why?
- 7th December 1974Name four limiting factors of photosynthesis.
- 8th December 1974In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 9th December 1974State what is meant by the term biodiversity.
- 10th December 1974Give one reason a manufacturer's own life cycle assessment of its product might not be fully objective.
- 11th December 1974Give one use of nanoparticles and one associated risk.
- 12th December 1974Give the ionic equation for neutralisation.
- 13th December 1974State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
- 14th December 1974State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 15th December 1974Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 16th December 1974State the equation for gravitational potential energy.
- 17th December 1974State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 18th December 1974Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 19th December 1974Name the type of electromagnetic wave used to sterilise medical equipment.
- 20th December 1974A 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.
- 21st December 1974A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 22nd December 1974Explain what happens to an enzyme above its optimum temperature.
- 23rd December 1974Name three non-specific defences of the human body.
- 24th December 1974Explain why reflex responses are faster than voluntary responses.
- 25th December 1974Define community, in ecological terms.
- 26th December 1974Explain why potable water is not the same as pure water.
- 27th December 1974Explain why sodium chloride conducts electricity when molten but not when solid.
- 28th December 1974Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 29th December 1974State the energy transfer that occurs during an exothermic reaction.
- 30th December 1974Name the two industrial methods of cracking.
- 31st December 1974In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.