Porosity Gizmo Lab.pdf - KaylaTran Name LIANG Date Student...

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2019 Name: ______________________________________ Date: ________________________ Student Exploration: Porosity Vocabulary: aquifer, gravel, permeability, porosity, sand, saturated, sediment, silt, surface water Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Two students are given cubic boxes, measuring 10 cm on a side. Robert puts a single glass marble with a diameter of 10 cm in the box. Susan puts 1,000 1-cm glass marbles in her box. 1. Whose box has more empty space? Explain. _____________________________________ _________________________________________________________________________ _________________________________________________________________________ 2. Whose box will be heavier? Explain. ____________________________________________ _________________________________________________________________________ Gizmo Warm-up Some rocks and sediments have a lot of empty space in them. This allows liquids such as water and oil to pass through and be stored in them. Permeability describes how easily liquid passes through a material, while porosity describes how much liquid can be stored in the material. These properties are explored in the Porosity Gizmo. Turn on the Macroscopic view of Gravel , Sand , and Silt . Gravel consists mostly of rock fragments greater than 2.0 mm in diameter. Sand consists of grains that are between 0.0625 and 2.0 mm in diameter. Silt consists of grains that are between 0.0039 and 0.0625 mm in diameter. 1. Which sediment do you think will allow water to pass through most easily? ______________ 2. Which sediment do you think could hold the most water? ______________ 3. An aquifer is a rock layer that stores and allows the flow of groundwater. Compared to other types of rock layers, how permeable and porous would an aquifer be?

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