Which rock sample had the most porosity? Which sample had the least? How much empty space was there ...

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Porosity and Permeability in Soil and Rock Samples: A Detailed Analysis

When investigating soil and rock samples to understand how fluids like water move through the Earth’s materials, two key properties are examined: porosity and permeability. These characteristics play a crucial role in disciplines such as geology, hydrology, and environmental science. In this report, we will explore which rock or soil sample had the most and least porosity, calculate the amount of empty space in the medium-sized rock sample, and determine how long it took water to pass through gravel, sand, and dirt. We will then identify the most permeable material based on this data.

Defining Porosity and Permeability

Porosity is defined as the ratio of the volume of pore spaces (voids) in a material to its total volume, usually expressed as a percentage. A material with high porosity has a large amount of empty space within its structure, allowing it to hold more water. However, high porosity does not always mean high permeability.

Permeability is a measure of how easily a fluid can move through a porous material. It depends not only on the amount of pore space but also on how well the pores are connected. A material can have high porosity but low permeability if the pores are not well connected or are extremely small.