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2019 Name: ______________________________________ Date: ________________________ Student Exploration: PorosityVocabulary:aquifer, gravel, permeability, porosity, sand, saturated, sediment, silt, surface waterPrior 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-upSome rocks and sedimentshave a lot of empty space in them. This allows liquids such as water and oil to pass through and be stored in them. Permeabilitydescribes how easily liquid passes through a material, while porositydescribes 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. Gravelconsists mostly of rock fragments greater than 2.0 mm in diameter. Sandconsists of grains that are between 0.0625 and 2.0 mm in diameter. Siltconsists 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 aquiferis 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?