Which of the following best describes the method to determine the volume of an irregular solid using water displacement (Density of materials)

The correct answer is Fill a graduated cylinder with water, record the initial volume, submerge the solid and record the final volume.

Exam lens: Write the relationship, substitute values only when needed, and finish by interpreting the result. This question asks: Which of the following best describes the method to determine the volume of an irregular solid using water displacement (Density of materials). The correct response is Fill a graduated cylinder with water, record the initial volume, submerge the solid and record the final volume, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Density of materials, the marking point should connect directly to apply AT 1 and AT 3 skills when measuring mass and volume. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Changes of state and the particle model, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 95 is distinct because it uses this exact question context and the exam lens rather than a generic particle-model sentence.