IGCSE Sciences - Co-Ordinated (0973) — October–November 2024, Paper 31
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 shows a diagram of Euglena, a single-celled organism. [Fig. 1.1: A diagram of Euglena showing labelled parts including: flagellum, eyespot, chloroplast, contractile…
Answer this question and get it marked →Fig. 2.1 shows the formulae of some substances. CH₄ Cl₂ H₂O NaCl NH₃ CO₂ O₂ HCl Identify the formula of the substance that is the main constituent of natural gas.
Answer this question and get it marked →A meteorite falls to Earth. Fig. 3.1 shows a speed–time graph of the meteorite as it falls. [Fig. 3.1: A speed–time graph showing the meteorite's speed increasing from 0 to a…
Answer this question and get it marked →Fig. 4.1 shows a graph of the number of new HIV infections per year from 2000 to 2020. [Fig. 4.1: A bar graph showing new HIV infections declining from 280 thousand in 2000 to 170…
Answer this question and get it marked →The table shows information about four metals and their reactions. metal reaction with cold water reaction with dilute acid ------- --------------------------…
Answer this question and get it marked →A truck engine exerts a driving force of 1500 N. The total resistive force on the truck is 1000 N. Calculate the resultant force on the truck. resultant force = ............. N
Answer this question and get it marked →Define the term inheritance.
Answer this question and get it marked →The diagram shows the three states of water and the changes of state between them. [Diagram showing: water vapour ←X→ liquid water ←Y→ ice, where X is the change from vapour to…
Answer this question and get it marked →A moth is attracted to light. Fig. 9.1 shows a converging lens and a moth placed beyond the focal point. [Fig. 9.1: Diagram showing a converging lens with focal point F marked. An…
Answer this question and get it marked →A seedling is laid on its side. The root grows downwards in response to gravity. State the name of this type of response and the stimulus.
Answer this question and get it marked →Fig. 11.1 shows the structural formula of an ethene molecule. [Fig. 11.1: Structural formula of ethene showing H₂C=CH₂ with all H atoms shown.] State the total number of atoms in…
Answer this question and get it marked →The distance from the Sun to the Earth is 1.5 × 10⁸ km. The speed of light is 3.0 × 10⁸ m/s. Calculate the time it takes for light to travel from the Sun to the Earth. Show your…
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