The student found the volume of the copper block by multiplying the area of its base by its height - Edexcel - GCSE Physics Combined Science - Question 2 - 2016 - Paper 1

To measure the volume of the small stone, the student can use the water displacement method. Here’s how:

1. Fill a graduated cylinder: Start by filling a graduated cylinder with a known volume of water. Let's say the water level is at 100 mL.

2. Submerge the stone: Carefully place the small stone in the graduated cylinder. Ensure that the stone is completely submerged in the water.

3. Measure the new water level: After submerging the stone, note the new water level in the graduated cylinder, which may now read 130 mL.

4. Calculate the volume of the stone: The volume of the small stone is determined by the change in water level: $ext{Volume of stone} = ext{New water level} - ext{Initial water level}$ Substituting the values, we get: $ext{Volume of stone} = 130 ext{ mL} - 100 ext{ mL} = 30 ext{ mL}$

This method is effective since it can accurately measure the volume of irregularly shaped objects.