Daily Practice · GCSE Science
August 1983 5-a-day
Every sheet in August 1983
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1983Why is the density of a gas much lower than that of the same substance as a liquid?
- 2nd August 1983A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
- 3rd August 1983A wave travels from air into glass and slows down. State what happens to its direction, and explain why in terms of wavelength.
- 4th August 1983State what a nebula is, and explain its role in the life cycle of a star.
- 5th August 1983Name two structures found in a plant cell but not in an animal cell.
- 6th August 1983Why is the wall of the left ventricle thicker than that of the right ventricle?
- 7th August 1983Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 8th August 1983Name the hormone released by the adrenal glands that prepares the body for fight or flight.
- 9th August 1983State one abiotic factor that can affect the population of fish living in a pond.
- 10th August 1983State what is meant by sustainable development.
- 11th August 1983What type of bonding is present in a compound formed between a metal and a non-metal?
- 12th August 1983State the pH value of a neutral solution.
- 13th August 1983State the two substances that react inside a hydrogen fuel cell.
- 14th August 1983State the general formula of the alkenes.
- 15th August 1983Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 16th August 1983A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 17th August 1983State the potential difference and frequency of the UK mains supply.
- 18th August 1983What did Bohr add to the nuclear model?
- 19th August 1983A box of weight 120 N has a base area of 0.40 m^2. Calculate the pressure it exerts on the ground.
- 20th August 1983Explain why a current-carrying wire positioned exactly parallel to a magnetic field experiences no force.
- 21st August 1983Why must the same volume of solution be used in every tube in an enzyme investigation?
- 22nd August 1983An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
- 23rd August 1983Describe the symptoms of rose black spot and its effect on the plant.
- 24th August 1983Name the three parts common to every homeostatic control system.
- 25th August 1983State one advantage and one disadvantage of selective breeding in farm animals.
- 26th August 1983An atom has atomic number 11 and mass number 23. State the number of protons.
- 27th August 1983Why did Mendeleev leave gaps in his table?
- 28th August 1983Calculate the mass of 0.25 mol of sodium hydroxide, NaOH. (Na = 23, O = 16, H = 1)
- 29th August 1983State whether the combustion of methane is exothermic or endothermic.
- 30th August 1983In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 31st August 1983State the flame test colour for sodium ions.