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This activity relates to the process of igneous rock formation by the cooling of magma. It can be used to illustrate how the rate at which molten rock cools affects the size of the crystals that form within the solid rock - rapid cooling producing small crystals, slower cooling producing larger ones. Hot, saturated solutions of lead iodide are cooled at different rates. The solution that cools faster ... Full description.
Grade level: Middle (6-8)
Resource type: Lab activity, Glossary
Subject: Mineralogy or petrology
 
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In this activity, students match photographs of igneous rocks with descriptions of their formation. There are also two teacher demonstrations that will help students to identify pumice and volcanic ash with graded bedding. Other pictures and descriptions are of breccia, columnar jointing in a basaltic lava flow, coarse grained granite, and phenocrysts in a porphyry. At the end of the activity students ... Full description.
Grade level: Middle (6-8)
Resource type: Classroom activity, Presentation / Demo
Subject: Mineralogy or petrology
 
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These activities are aimed at simulating metamorphic rock formation, and explain how increased pressure and heat affect such formation. The first activity, which can also be performed as a teacher demonstration, simulates the idea of contact metamorphism by investigating the effect of heat from a beaker of hot water on egg white. The other two laboratory activities simulate the formation of slate ... Full description.
Grade level: Middle (6-8)
Resource type: Lab activity, Lesson plan
Subject: Mineralogy or petrology
 
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This activity will allow students to simulate the formation of sedimentary rocks by compressing sand, water, and other materials in a syringe. The products are allowed to dry, and students will investigate how the properties of the samples of sedimentary rocks so formed are dependent on the extent of their compaction and cementation. The activity will help to explain that for most sediments to become ... Full description.
Grade level: Middle (6-8)
Resource type: Lab activity
Subject: Mineralogy or petrology
 
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This site contains photographs of pseudomorph minerals and an explanation of the formation of pseudomorphs. Pseudomorph literally means false form and is used in mineralogy to indicate that a mineral has the outward appearance of a different mineral. Pseudomorph photographs at this site include filling pseudomorphs, replacement pseudomorphs, and encrustation pseudomorphs. Some examples shown include ... Full description.
Grade level: Middle (6-8), High (9-12), College (13-14)
Resource type: Photograph, Ref. material
Subject: Mineralogy or petrology
 
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This presentation provides a detailed explanation of the physical properties of minerals. It covers the classic four-part definition of "mineral" and provides an overview of the physical properties by which minerals are identified. Each property is illustrated with one or more photographs. Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), College (13-14)
Resource type: Presentation / Demo
Subject: Mineralogy or petrology
 
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This presentation describes the six crystal systems used for classifying minerals. Each of the systems is represented by a diagram showing the angles and proportions of the crystallographic axes, a physical model showing the possible arrangements of faces and one or more photos of actual specimens displaying the described symmetry and some possible modifications. Full description.
Grade level: Middle (6-8), High (9-12), College (13-14)
Resource type: Presentation / Demo
Subject: Mineralogy or petrology
 
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This presentation describes the system of rock identification. It provides an overview of the rock cycle and the three major types of rocks. Each major type is then described in more detail. The descriptions are accompanied by photos and examples of each type. Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), College (13-14)
Resource type: Presentation / Demo
Subject: Mineralogy or petrology
 
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This page presents a classification system used for igneous rocks. The system consists of a matrix which divides rocks on the basis of their texture (in rows) and their chemical composition (in columns). Links are provided to photographs of each rock type, and an explanation of the terms used in the classification. Full description.
Grade level: Middle (6-8), High (9-12), College (13-14)
Resource type: Photograph, Ref. material
Subject: Mineralogy or petrology
 
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This archive provides descriptions and photos of the several types of sedimentary rocks. A definition of sedimentary rocks and overview of the basic classification is provided. Links to additional examples of chemical and clastic rocks are also included. Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), College (13-14)
Resource type: Photograph, Ref. material
Subject: Mineralogy or petrology
 
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National Science Education Standards (NSES): Read
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Results 71 - 80 of 532 <<  4 5 6 7 8 9 10 11 12  >>