Daily Practice · GCSE Science
January 1994 - GCSE Science 5-a-day
Every sheet in January 1994
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 1994A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 2nd January 1994State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 3rd January 1994State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 4th January 1994Where in a plant are stem cells found?
- 5th January 1994Name the process by which dissolved sugars are transported in the phloem.
- 6th January 1994Why is photosynthesis described as endothermic?
- 7th January 1994Define the term allele.
- 8th January 1994State one human activity that reduces the amount of land available for other organisms.
- 9th January 1994State the two substances that must both be present for iron to rust.
- 10th January 1994State the size range of a nanoparticle.
- 11th January 1994Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 12th January 1994Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 13th January 1994Explain why carboxylic acids are described as 'weak acids'.
- 14th January 1994Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 15th January 1994What happens to the energy described as 'wasted' in a transfer?
- 16th January 1994Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 17th January 1994Explain the difference between irradiation and contamination.
- 18th January 1994Explain why ultraviolet radiation can be harmful to human skin.
- 19th January 1994State two ways of inducing a potential difference across a conductor using a magnetic field.
- 20th January 1994A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
- 21st January 1994Name the products of protein digestion.
- 22nd January 1994State the difference between an antibiotic and a painkiller.
- 23rd January 1994A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 24th January 1994Name the equipment used to measure the abundance of a small plant species within a sample area.
- 25th January 1994State the two main steps used to produce potable water from a fresh water source.
- 26th January 1994State the charge on a calcium ion (Group 2).
- 27th January 1994Convert 250 cubic centimetres into cubic decimetres.
- 28th January 1994A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
- 29th January 1994Define the term 'hydrocarbon'.
- 30th January 1994Write the formula for calculating an Rf value.
- 31st January 1994Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.