Daily Practice · GCSE Science
April 2007 - GCSE Science 5-a-day
Every GCSE Science sheet published in April 2007, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in April 2007
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2007State what the gradient of a distance-time graph represents.
- 2nd April 2007Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 3rd April 2007Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 4th April 2007State three functions of mitosis.
- 5th April 2007What happens to guard cells when a plant is short of water?
- 6th April 2007Write the word equation for photosynthesis.
- 7th April 2007In 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.
- 8th April 2007State one method used to try to maintain biodiversity.
- 9th April 2007Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 10th April 2007Why is graphite soft and slippery?
- 11th April 2007Explain the difference between a strong acid and a concentrated acid.
- 12th April 2007A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 13th April 2007State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 14th April 2007Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 15th April 2007Name four energy stores.
- 16th April 2007State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 17th April 2007State one source of natural background radiation and one source of artificial (man-made) background radiation.
- 18th April 2007Name the type of electromagnetic wave used to sterilise medical equipment.
- 19th April 2007A 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.
- 20th April 2007A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 21st April 2007What is an enzyme?
- 22nd April 2007Describe phagocytosis.
- 23rd April 2007Explain why reflex responses are faster than voluntary responses.
- 24th April 2007Define community, in ecological terms.
- 25th April 2007Explain why potable water is not the same as pure water.
- 26th April 2007Explain why sodium chloride conducts electricity when molten but not when solid.
- 27th April 2007Give the formula for percentage yield.
- 28th April 2007A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.
- 29th April 2007Name the two industrial methods of cracking.
- 30th April 2007State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.