Explain the method you would use to find the volume of an irregular solid by using water displacement. Include the steps you would take and the principle that justifies the method.

To determine the volume of an irregular solid by water displacement, first fill a graduated cylinder with a known volume of water and record this initial volume. Then carefully lower the irregular solid into the water so that it is fully submerged, making sure no air bubbles cling to it. Read the new water level on the cylinder; the increase in volume equals the volume of the solid. The principle behind this method is Archimedes’ principle, which states that the volume displaced by an object equals the volume of the object itself.

Method lens: First identify the measured quantity, then match the equation or particle idea to the command word. This question asks: Explain the method you would use to find the volume of an irregular solid by using water displacement. Include the steps you would take and the principle that justifies the method. The correct response is To determine the volume of an irregular solid by water displacement, first fill a graduated cylinder with a known volume of water and record this initial volume. Then carefully lower the irregular solid into the water so that it is fully submerged, making sure no air bubbles cling to it. Read the new water level on the cylinder; the increase in volume equals the volume of the solid. The principle behind this method is Archimedes’ principle, which states that the volume displaced by an object equals the volume of the object itself., 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 describe how to determine the volume of an irregular solid using displacement of water. 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 80 is distinct because it uses this exact question context and the method lens rather than a generic particle-model sentence.