Daily Practice · GCSE Science
June 1985 5-a-day
Every sheet in June 1985
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1985Give two processes that removed carbon dioxide from the early atmosphere.
- 2nd June 1985Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 3rd June 1985What is the difference between alternating and direct current?
- 4th June 1985What observation showed that the atom is mostly empty space?
- 5th June 1985A box of weight 120 N has a base area of 0.40 m^2. Calculate the pressure it exerts on the ground.
- 6th June 1985Explain why a current-carrying wire positioned exactly parallel to a magnetic field experiences no force.
- 7th June 1985In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 8th June 1985Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 9th June 1985Why can HIV not be treated with antibiotics?
- 10th June 1985Name the three parts common to every homeostatic control system.
- 11th June 1985State one advantage and one disadvantage of selective breeding in farm animals.
- 12th June 1985Write the electronic structure of an atom with 12 electrons.
- 13th June 1985State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 14th June 1985Define the limiting reactant.
- 15th June 1985A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 16th June 1985In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 17th June 1985Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 18th June 1985Why should you write down the equation even if you cannot finish the calculation?
- 19th June 1985State the UK mains supply frequency and typical potential difference.
- 20th June 1985What causes the pressure of a gas on the walls of its container?
- 21st June 1985A train travels at a constant velocity of 40 m/s for 3 minutes. Calculate the distance it travels, in km.
- 22nd June 1985A microwave oven uses electromagnetic waves with a wavelength of 0.12 m. Calculate the frequency of these waves (speed of light = 3 x 10^8 m/s).
- 23rd June 1985Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
- 24th June 1985Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 25th June 1985Why are xylem cells strengthened with lignin?
- 26th June 1985Why is glucose converted into starch for storage?
- 27th June 1985Name the three-domain system of classification, and name the scientist most associated with proposing it.
- 28th June 1985State one way in which high biodiversity benefits an ecosystem.
- 29th June 1985Explain how painting an iron gate helps prevent it from rusting.
- 30th June 1985Why can an ionic solid not conduct electricity?