Daily Practice · GCSE Science
March 1999 - GCSE Science 5-a-day
Every sheet in March 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1999Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 2nd March 1999On a velocity-time graph, what does the area between the line and the time axis represent?
- 3rd March 1999State the speed of all electromagnetic waves travelling through a vacuum.
- 4th March 1999State the name of the force that keeps a satellite in orbit around the Earth.
- 5th March 1999Give one risk of stem cell treatment.
- 6th March 1999Why does a potometer measure water uptake rather than transpiration directly?
- 7th March 1999Why does the rate of photosynthesis fall at very high temperatures?
- 8th March 1999A plant grown in the shade is shorter than a genetically identical plant of the same species grown in full sunlight. State whether this difference is genetic variation, environmental variation, or both.
- 9th March 1999Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 10th March 1999State the four stages considered in a life cycle assessment.
- 11th March 1999Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 12th March 1999Define oxidation in terms of electrons.
- 13th March 1999State two units that the rate of a reaction can be measured in.
- 14th March 1999Name the small molecule typically released as a by-product during condensation polymerisation.
- 15th March 1999Describe, 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 March 1999A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 17th March 1999State 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 March 1999A 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.
- 19th March 1999A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.
- 20th March 1999A transformer's primary coil is connected to a 12 V supply and has 60 turns. Calculate the number of turns needed on the secondary coil to produce an output of 3.0 V.
- 21st March 1999A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 22nd March 1999State two functions of bile.
- 23rd March 1999What is an antigen?
- 24th March 1999Define a synapse.
- 25th March 1999Give one example of an abiotic factor that could affect where a plant species grows.
- 26th March 1999Explain why potable water is not the same as pure water.
- 27th March 1999Explain why sodium chloride conducts electricity when molten but not when solid.
- 28th March 1999State two reasons why a percentage yield is less than 100 percent.
- 29th March 1999State what is meant by the activation energy of a reaction.
- 30th March 1999State the general formula of the alkanes.
- 31st March 1999Explain why the baseline is drawn in pencil rather than ink.