Daily Practice · GCSE Science
February 1990 5-a-day
Every sheet in February 1990
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1990Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 2nd February 1990Give the equation for efficiency in terms of energy.
- 3rd February 1990Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 4th February 1990A gardener pushes a mower with a force of 60 N through a distance of 8.0 m. Calculate the work done. Use W = F x s.
- 5th February 1990A water wave has a wavelength of 0.4 m and a frequency of 2.5 Hz. Calculate its speed.
- 6th February 1990Explain how elements heavier than iron, such as gold, are created and distributed through the universe.
- 7th February 1990State the function of the mitochondria.
- 8th February 1990Which component of blood transports carbon dioxide, urea and hormones?
- 9th February 1990Name the organelle in a plant cell where photosynthesis takes place.
- 10th February 1990State the type of diabetes in which the pancreas produces little or no insulin.
- 11th February 1990A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 12th February 1990Name one method used to sterilise fresh water during the production of potable water.
- 13th February 1990Why can metals conduct electricity when solid?
- 14th February 1990Write the word equation for the reaction between zinc and hydrochloric acid.
- 15th February 1990State whether forming a new chemical bond requires energy or releases energy.
- 16th February 1990Describe the colour change seen when an alkene is shaken with bromine water.
- 17th February 1990State the approximate percentage of nitrogen in today's atmosphere.
- 18th February 1990A spring is compressed. Which energy store increases?
- 19th February 1990What is the difference between alternating and direct current?
- 20th February 1990What observation showed that the atom is mostly empty space?
- 21st February 1990State the name of the upward force acting on an object placed in a fluid.
- 22nd February 1990A current-carrying wire experiences a force of 1.2 N when placed at right angles to a magnetic field of flux density 0.40 T, carrying a current of 6.0 A. Calculate the length of wire in the field.
- 23rd February 1990In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 24th February 1990Name the organ system responsible for breaking food down into small, soluble molecules.
- 25th February 1990Why can HIV not be treated with antibiotics?
- 26th February 1990State one difference between nervous and hormonal coordination.
- 27th February 1990State what is meant by a selection pressure.
- 28th February 1990An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.