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Laboratory Activities – Lab #2 By: Carlin Conk Lab Activity #1 Investigating Rocks and Minerals Lab Activity #1 Objectives • Examine the rock and mineral specimens using the internet links provided or the PowerPoint file for Lab #2. • Note differences in color, shape, and size of minerals. • With the rock samples notice the differences between the three broad classes of rocks: igneous, metamorphic, and sedimentary. • Note the size and arrangement of individual minerals. • As you look at the rocks and minerals, complete Tables 1 and 2. Lab Activity #1 – Table 1 • Quartz is the first mineral that we need to examine in Table 1. • You can use the PowerPoint file listed for Lab #2 and scroll through until you find “Quartz” listed under the “Primary Mineral” section. • What is the color? White? Lab Activity #1 – Table 1 • Now we need to determine the plant nutrients associated with quartz minerals. • We can easily complete this task by looking at the chemical formula for quartz. • The chemical formula for quartz is Si02. • Since neither silica or oxygen is a plant nutrient, we would say “none” under the “Plant Nutrient” category. Lab Activity #1 – Table 1 Minerals Color Quartz White Plant Nutrients None Rate of Weathering Slow Lab Activity #1 – Table 2 • Granite is the first important soil forming rock that we need to examine. • We need to first determine the class that granite belongs to. • We can go back to the PowerPoint for Lab #2 and search for ‘granite’. • We find that granite is the first rock listed with the igneous rocks. Lab Activity #1 – Table 2 • We then need to find the dominant minerals associated with granite. • In the PowerPoint file and also in the laboratory hand-out, we see that granite is composed of quartz and orthoclase feldspar. Lab Activity #1 – Table 2 Rock Class Dominant Minerals Rate of Weathering Granite Igneous Quartz and Slow Orthoclase Feldspar Lab Activity #2 Rock Cycle Model Lab Activity #2 • We must investigate the rock cycle model and note the processes (such as: heat, pressure, erosion, etc.) that change one rock class to another. • Then, we will answer questions using the rock cycle as a guide. Lab Activity #2 • You should use the hyperlink, “Rock Cycle Model”, to answer the questions. • Click on the rock type that you would like to investigate for a description. Lab Activity #3 Geology of North Carolina Lab Activity #3 • In this exercise, we will be investigating the geology of North Carolina using a geologic map. • Finally, we will answer the 2 questions. Lab Activity #3 • Use the hyperlink provided in the instructions to familiarize with the rock types of North Carolina. • Click on the area of the map that you would like to investigate further. • For example, if you wanted to investigate the Coastal Plain, you would click on the yellow section.