Daily Practice · GCSE Science
February 1965 5-a-day
Every sheet in February 1965
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1965A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.
- 2nd February 1965A transformer's primary coil is connected to a 12 V supply and has 60 turns. Calculate the number of turns needed on the secondary coil to produce an output of 3.0 V.
- 3rd February 1965Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 4th February 1965Why does a food test for sugars need a water bath?
- 5th February 1965Explain what is meant by a double blind trial.
- 6th February 1965Define a synapse.
- 7th February 1965Give one example of an abiotic factor that could affect where a plant species grows.
- 8th February 1965Name two methods of desalinating seawater.
- 9th February 1965Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 10th February 1965Give the formula for atom economy.
- 11th February 1965Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 12th February 1965State the general formula of the alkanes.
- 13th February 1965State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 14th February 1965How is the uncertainty in a set of repeated readings usually estimated?
- 15th February 1965Define electric current.
- 16th February 1965A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 17th February 1965Calculate the momentum of a 1200 kg car travelling at 18 m/s.
- 18th February 1965Explain why a compass needle placed just outside one end of a current-carrying solenoid lines up parallel to the solenoid's axis.
- 19th February 1965Name the second major piece of observational evidence, besides red-shift, that supports the Big Bang model.
- 20th February 1965Calculate the surface area to volume ratio of a cube of side 2 cm.
- 21st February 1965Describe how phagocytes destroy pathogens in the body.
- 22nd February 1965A student counts 19 pulse beats in 10 seconds immediately after running. Calculate her heart rate in beats per minute.
- 23rd February 1965State how many chromosomes are found in a normal human body cell, and how they are arranged.
- 24th February 1965Give the resolution of a burette that can be read to the nearest half of a small division.
- 25th February 1965Why is an atom electrically neutral?
- 26th February 1965State the law of conservation of mass.
- 27th February 1965In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
- 28th February 1965State the condition, in terms of energy, that colliding particles must meet for a reaction to occur.