Question 29
Polystyrene foam is less dense than water. Grace wanted to measure the volume of a small block of foam using the displacement method. First, she added some water to a measuring cylinder and measured its volume. Then, she added a steel block and measured the new volume. She removed the steel block and added both the foam and steel blocks to the measuring cylinder. The diagrams show her results.
Why did Grace measure the volume of the water with only the steel block in it?
Why did Grace measure the volume of the water with only the steel block in it?
