Question

Because the rock is irregularly shaped, you used the (______) method to measure its volume.

A. Addition
B. Direct
C. Displacement

Answer 1

The correct answer is option C. "Displacement".

Step-by-step explanation:

The displacement method for measuring volume consist in measuring the amount of water that an object displaces when is submerged in a defined amount of water. This is an indirect method which is particularly useful to measure the volume of irregularly shaped objects, such as the rock stated in the question.

Answer 2

Displacement method is used to measure the volume of an irregular rock. The rock is placed in a beaker with a specific volume of water. The rock sinks in the water and displaces the water. The volume of the rock will be equal to the amount of water displaced. This method cannot be used on floating objects despite it's effectiveness.