Daily Practice · GCSE Science
July 1982 5-a-day
Every sheet in July 1982
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 1982Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 2nd July 1982Name the energy store associated with a moving car.
- 3rd July 1982Give the equation linking energy transferred, charge flow and potential difference.
- 4th July 1982Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 5th July 1982A force of 40 N is applied 0.25 m from a pivot. Calculate the moment.
- 6th July 1982A rectangular coil carrying a current is placed in a magnetic field, with its two long sides parallel to each other. Explain why the coil rotates rather than moving in a straight line.
- 7th July 1982Why does taking repeat readings and calculating a mean improve the data?
- 8th July 1982State the type of large biological molecule that all enzymes are made from.
- 9th July 1982State two ways measles is prevented from spreading.
- 10th July 1982Define homeostasis.
- 11th July 1982Give one example of variation that is caused purely by the environment rather than by genes.
- 12th July 1982A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
- 13th July 1982Give two observations when lithium is added to water.
- 14th July 1982State the value of the Avogadro constant and what it counts.
- 15th July 1982Using the values in the previous question, calculate the overall energy change for the reaction.
- 16th July 1982In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 17th July 1982Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 18th July 1982Write the equation linking power, energy and time, and rearrange it for time.
- 19th July 1982A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 20th July 1982A gas is heated in a sealed rigid container. Explain what happens to the pressure.
- 21st July 1982A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 22nd July 1982Name the type of electromagnetic wave used by a television remote control.
- 23rd July 1982Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 24th July 1982Define an undifferentiated cell.
- 25th July 1982Which tissue transports water and mineral ions from the roots?
- 26th July 1982Give three uses of the glucose produced in photosynthesis.
- 27th July 1982Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 28th July 1982A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
- 29th July 1982Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
- 30th July 1982Why do polymers have higher melting points than small molecules such as methane?
- 31st July 1982Complete: acid + metal carbonate gives ...