Daily Practice · GCSE Science
September 1994 - GCSE Science 5-a-day
Every sheet in September 1994
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1994Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 2nd September 1994A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 3rd September 1994A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 4th September 1994State what the gradient of a distance-time graph represents.
- 5th September 1994Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 6th September 1994Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 7th September 1994State three functions of mitosis.
- 8th September 1994What happens to guard cells when a plant is short of water?
- 9th September 1994Write the word equation for photosynthesis.
- 10th September 1994In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 11th September 1994State one method used to try to maintain biodiversity.
- 12th September 1994Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 13th September 1994Why is graphite soft and slippery?
- 14th September 1994Explain the difference between a strong acid and a concentrated acid.
- 15th September 1994A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 16th September 1994State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 17th September 1994State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 18th September 1994Name four energy stores.
- 19th September 1994Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 20th September 1994State one source of natural background radiation and one source of artificial (man-made) background radiation.
- 21st September 1994Name the type of electromagnetic wave used to sterilise medical equipment.
- 22nd September 1994A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 23rd September 1994Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 24th September 1994What is an enzyme?
- 25th September 1994Describe phagocytosis.
- 26th September 1994Explain why reflex responses are faster than voluntary responses.
- 27th September 1994Define community, in ecological terms.
- 28th September 1994Name two methods of desalinating seawater.
- 29th September 1994Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 30th September 1994Give the formula for percentage yield.