Daily Practice · GCSE Science
August 1997 - GCSE Science 5-a-day
Every sheet in August 1997
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1997A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 2nd August 1997Give the equation for wave speed and its units.
- 3rd August 1997State the UK mains supply frequency and typical potential difference.
- 4th August 1997Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 5th August 1997A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 6th August 1997State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 7th August 1997State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 8th August 1997Give one risk of stem cell treatment.
- 9th August 1997Why does a potometer measure water uptake rather than transpiration directly?
- 10th August 1997Why does the rate of photosynthesis fall at very high temperatures?
- 11th August 1997Define the term allele.
- 12th August 1997Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 13th August 1997State the four stages considered in a life cycle assessment.
- 14th August 1997Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 15th August 1997Define oxidation in terms of electrons.
- 16th August 1997State two units that the rate of a reaction can be measured in.
- 17th August 1997Explain why carboxylic acids are described as 'weak acids'.
- 18th August 1997Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 19th August 1997A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 20th August 1997A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 21st August 1997A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 22nd August 1997Explain why ultraviolet radiation can be harmful to human skin.
- 23rd August 1997State two ways of inducing a potential difference across a conductor using a magnetic field.
- 24th August 1997State one structure found in a bacterial cell but not in an animal cell.
- 25th August 1997State two functions of bile.
- 26th August 1997What is an antigen?
- 27th August 1997A 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.
- 28th August 1997Name the equipment used to measure the abundance of a small plant species within a sample area.
- 29th August 1997Define a finite resource, giving one example.
- 30th August 1997State one reason why simple covalent substances such as chlorine have low melting points.
- 31st August 1997State two reasons why a percentage yield is less than 100 percent.