Daily Practice · GCSE Science
June 1990 5-a-day
Every sheet in June 1990
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1990State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 2nd June 1990Define an undifferentiated cell.
- 3rd June 1990Which tissue transports water and mineral ions from the roots?
- 4th June 1990Give three uses of the glucose produced in photosynthesis.
- 5th June 1990Define the term allele.
- 6th June 1990A 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.
- 7th June 1990Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
- 8th June 1990Why do polymers have higher melting points than small molecules such as methane?
- 9th June 1990Complete: acid + metal carbonate gives ...
- 10th June 1990State the four factors that can increase the rate of a chemical reaction.
- 11th June 1990Explain why carboxylic acids are described as 'weak acids'.
- 12th June 1990Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 13th June 1990By what factor does kinetic energy increase if speed is doubled?
- 14th June 1990State the correct SI unit for density.
- 15th June 1990Define the term 'half-life' of a radioactive isotope.
- 16th June 1990Explain why ultraviolet radiation can be harmful to human skin.
- 17th June 1990State two ways of inducing a potential difference across a conductor using a magnetic field.
- 18th June 1990Convert 0.02 mm into micrometres (um).
- 19th June 1990Describe the positive result of the Biuret test.
- 20th June 1990What is tested during preclinical testing?
- 21st June 1990A 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.
- 22nd June 1990Name the equipment used to measure the abundance of a small plant species within a sample area.
- 23rd June 1990State one benefit of recycling metal rather than extracting new metal from its ore.
- 24th June 1990Name the three types of strong chemical bonding.
- 25th June 1990Why do companies prefer reactions with a high atom economy?
- 26th June 1990On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 27th June 1990Define the term 'hydrocarbon'.
- 28th June 1990Explain why the solvent level in the container must be below the pencil baseline.
- 29th June 1990In the specific heat capacity practical, why is the block insulated?
- 30th June 1990Describe the current-potential difference graph for a filament lamp.