Daily Practice · GCSE Science
April 1973 5-a-day
Every sheet in April 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 1973Explain how solid carbon particulates released by combustion can cause global dimming.
- 2nd April 1973A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 3rd April 1973Define specific latent heat of fusion.
- 4th April 1973Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 5th April 1973Explain, in terms of particle motion, why a wave can transfer energy without transferring matter.
- 6th April 1973Name the region of the Solar System where most asteroids are found.
- 7th April 1973Give the equation linking magnification, image size and real size.
- 8th April 1973Give one advantage and one disadvantage of a stent.
- 9th April 1973Name the gas that is released as a product of photosynthesis.
- 10th April 1973A person's blood glucose concentration is 4.8 mmol/dm^3 before breakfast and 7.2 mmol/dm^3 after breakfast. Calculate the increase in blood glucose concentration.
- 11th April 1973State what is meant by the term ecosystem.
- 12th April 1973Explain why potable water is not required to be chemically pure.
- 13th April 1973Describe metallic bonding.
- 14th April 1973State the name given to a reaction in which a substance loses electrons.
- 15th April 1973State whether breaking a chemical bond requires energy or releases energy.
- 16th April 1973Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 17th April 1973Give two processes that removed carbon dioxide from the early atmosphere.
- 18th April 1973Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 19th April 1973Why does the national grid transmit electricity at a very high potential difference?
- 20th April 1973Why is the atomic model a good example of how scientific models change?
- 21st April 1973State two factors, other than depth, that affect the pressure at a given point in a liquid.
- 22nd April 1973State the name of the rule used to find the direction of the force on a current-carrying wire in a magnetic field, and name the three quantities it relates.
- 23rd April 1973Define the independent variable.
- 24th April 1973Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 25th April 1973Name the type of pathogen that causes malaria.
- 26th April 1973State what is meant by negative feedback.
- 27th April 1973Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 28th April 1973Write the electronic structure of an atom with 12 electrons.
- 29th April 1973Why are the noble gases unreactive?
- 30th April 1973How many atoms are there in 0.5 mol of helium?