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This Why Files article investigates trading, sources, and use of metal by Arctic peoples. Until recently, metal was seldom found at Arctic archeological digs. In 1994, a group of scientists found many iron and copper objects by simply using a metal detector. By analyzing isotopes, scientists were able to show that both iron and copper came from few sources that were traded widely. Starting around ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), General public
Resource type: Report
Subject: Human geography, Geochemistry
 
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This site contains 16 questions on the topic of energy and mineral resources, which covers energy sources, resource types, and uses of resources. This is part of the Principles of Earth Science course at the University of South Dakota. Users submit their answers and are provided immediate verification. Full description.
Grade level: College (13-14), College (15-16)
Resource type: Assessment / Evaluation
Subject: Geochemistry, Geology
 
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This resource offers, among other things, a collection of journal entries from scientists reporting on their personal experiences of the volcanoes of Costa Rica. Reference sections include an introduction to volcanoes and Central America, the anatomy of subduction zones, the source of volatiles, sampling volatiles, recycling elements, and isotope geochemistry (geochemical tracers). There is a short ... Full description.
Grade level: General public
Resource type: Illustration - scientific, Map, Photograph, Video, Ref. material, Report
Subject: Geochemistry, Geology
 
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This website contains abbreviated course notes from a geophysics class at California State University at Sacramento. The notes contain topic summaries and formulas, including gravity, Newton's laws, radioactivity, radioactive decay, Rb/Sr dating, Uranium-Thorium-Lead dating, uses of Lead, fission-track dating, Potassium-Argon dating, Carbon dating, heat, magnetism, seismology and earthquake prediction. ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Ref. material
Subject: Geochemistry, Geophysics
 
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This module focuses on the biogeochemical cycles of five of the major elements important to life - carbon, nitrogen, phosphorus, sulfur, and oxygen - and their role in climatic change. The chapters include: Biogeochemical Processes, Biogeochemical Cycles and Climate, The Modern Coupled C-N-P-S-O System, Carbon Cycles, The Important Nutrient Nitrogen, Phosphorus and Sulfur, and The Water Cycle. Study ... Full description.
Grade level: High (9-12), College (13-14), College (15-16)
Resource type: Module / Unit, Book - text
Subject: Climatology, Geochemistry
 
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This online publication shows how chemists and geologists used analytical chemistry to determine the age of the Earth and to show that an extraterrestrial body collided with the Earth at the end of the Cretaceous period (K-T boundary). There are also chapters on the application of geochemistry to geologic processes (volcanoes, ore deposits, and others), its use in tracking environmental changes in ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Illustration - scientific, Photograph, Ref. material
Subject: Chemistry, Geochemistry
 
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This collection of articles summarizes environmental geochemical studies of metallic mineral deposits in Alaska, including sulfide, gold, mercury, chromium, and uranium mines and deposits. The studies report metal and acid concentrations in samples collected around such mines and deposits, and evaluate environmental effects of the deposits. An introduction explains geochemical processes, how metals ... Full description.
Grade level: Graduate / Professional
Resource type: Case study, Photograph
Subject: Environmental science, Geochemistry
 
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This U.S. Geological Survey fact sheet investigates potential environmental contamination around naturally occurring, mercury-rich mineral deposits in Alaska. Testing of mercury levels in streams and sediments is described, as well as mercury levels in fish downstream from mines and the environmental effects of mercury entering the food chain. Full description.
Grade level: Graduate / Professional
Resource type: Ref. material
Subject: Environmental science, Geochemistry
 
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This site contains a list of materials available for postal delivery, including: Icelandic basalt, Massachusetts marine sediment, Virginia diabase, Wyoming shale, etc. The size and content of each sample, descriptions of the location the reference material is taken from, and total element concentrations are given. Full description.
Grade level: Graduate / Professional
Resource type: In-situ dataset
Subject: Geochemistry, Mineralogy or petrology
 
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In this activity, students observe the process of mineral crystallization under a microscope and answer questions about what they see. Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Lab activity, Lesson plan
Subject: Geochemistry, Mineralogy or petrology
 
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Results 71 - 80 of 208 <<  4 5 6 7 8 9 10 11 12  >>