Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
16th February 2022
- 1Ecology
Give one example of a biotic factor that could affect a population of rabbits.
- 2Ecosystems, Adaptation and Feeding Relationships
In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
- 3Biodiversity, Cycles and Human Impact
Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 4Chemistry Required Practicals and Data Analysis
In the rate experiment where a cross disappears, why is the result subjective?
- 5Atomic Structure and the Periodic Table
A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
You are looking at an earlier sheet. Today's sheet is the one that adds a day.
Your run is kept in this browser only, and there is no account.
Recent GCSE Science sheets
Every sheet is deterministic: the same date always regenerates the same five questions. All of February 2022, including the monthly compilation PDF.