Science students often have difficulty thinking about large spatial scales. The purpose …
Science students often have difficulty thinking about large spatial scales. The purpose of the exercise is to redo Eratosthenes' calculation of the radius of the Earth using data from to sites in ancient Egypt. The excercise teaches about the methodology of science - how Eratothenes figured it out - rather than worried about what the "right" answer is. It can also be used to discuss the role of models in geological thinking.
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An activity where students make a geologic timeline from calculator tape. (Note: …
An activity where students make a geologic timeline from calculator tape.
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Reading and constructing geologic maps is one skill that every geologists has …
Reading and constructing geologic maps is one skill that every geologists has to master. Initially, this means that we have to understand the symbols that are used on geologic maps. Once we know the general meaning of these symbols, we will have to learn how to measure and plot them. The measuring is generally done using a magnetic compass. Finally, we have to plot the data on a map so that others understand the geology based on our mapping.
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This learning video uses a simple analog setup to explore why earthquakes …
This learning video uses a simple analog setup to explore why earthquakes are so unpredictable. The setup is simple enough that students should be able to assemble and operate it on their own with a teacher's supervision. The teaching approach used in this module is known as the 5E approach, which stands for Engagement, Exploration, Explanation, Elaboration, and Evaluation. Over the course of this lesson, the basic mechanisms that give rise to the behavior of the simple analog system are explained, and further elaboration helps the students to apply their understanding of the analog system to complex fault systems that cause earthquakes
Our agricultural system is made up of interconnected resources. The availability of …
Our agricultural system is made up of interconnected resources. The availability of these resources affects how much food we can produce. In this module, you will explore the resources that make up our agricultural system in order to answer the question: can we feed the growing population? Food production is faced with an ever-growing number of challenges. Growing enough food depends on the availability of resources such as arable land, sunlight, rain, and organic matter. Throughout this activity, you will explore land uses and soil quality through graphs of land use and crop production. You will run experiments with computational models to compare the effect of different management strategies on the land. You will not be able to answer the module's framing question at the end of the module, but you will be able to describe how humans can maintain and replenish important resources to be able to produce food long into the future.
This interactive animation focuses on the carbon cycle and includes embedded videos …
This interactive animation focuses on the carbon cycle and includes embedded videos and captioned images to provide greater clarification and detail of the cycle than would be available by a single static visual alone.
In this activity, students develop concept maps of the carbon cycle through …
In this activity, students develop concept maps of the carbon cycle through a die-rolling game that simulates carbon reservoirs and fluxes. By the end of this activity, students should be able to describe and explain how the carbon cycle has changed in the last 250 years.
This module provides an overview of the biogeochemical carbon cycle. Major sources …
This module provides an overview of the biogeochemical carbon cycle. Major sources and sinks of carbon are discussed as well as the impact of human activities on global carbon levels.
In this experiment, students investigate the importance of carbon dioxide to the …
In this experiment, students investigate the importance of carbon dioxide to the reproductive growth of a marine microalga, Dunalliela sp. (Note that the directions are for teachers and that students protocol sheets will need to be created by teachers.)
Interactive visualization that provides a basic overview of the Earth's carbon reservoirs …
Interactive visualization that provides a basic overview of the Earth's carbon reservoirs and amount of carbon stored in each, CO2 transport among atmosphere, hydrosphere, geosphere, and biosphere, and a graph comparing global temp (deg C) and atmospheric CO2 levels (ppm) over the past 1000 years.
Students collect and analyze geological and biological materials for carbon content in …
Students collect and analyze geological and biological materials for carbon content in order to investigate carbon through time. Implications for energy production now and in the future are explored in the context of carbon cycling in the oceans, the atmosphere, and the geosphere.
In this 3-part lab activity, students investigate how carbon moves through the …
In this 3-part lab activity, students investigate how carbon moves through the global carbon cycle and study the effects of specific feedback loops on the carbon cycle.
Students consider the Earth's major types of landforms such as mountains, rivers, …
Students consider the Earth's major types of landforms such as mountains, rivers, plains, hills, canyons, oceans and plateaus. Student teams build three-dimensional models of landscapes, depicting several of these landforms. Once the models are built, they act as civil and transportation engineers to design and build roads through the landscapes they have created. The worksheet is provided in English and Spanish.
This interactive resource adapted from the National Park Service presents the key …
This interactive resource adapted from the National Park Service presents the key concepts of cave and karst systems, including how and where they form, different types, and various cave environments.
Two or three weeks of the course are dedicated to studying diagenesis. …
Two or three weeks of the course are dedicated to studying diagenesis. Lectures start with a general definition of diagenesis, the range of conditions under which it occurs, and examples of diverse diagenetic environments and features. I use rice crispy cereal and rice crispy treats to introduce cement (the marshmellow is the cement that "glues" the rice krispies together). I also incorporate basic hydrogeology to show how pores filled with (or partially filled with) groundwater provide both the space and the material for cementation. As part of this lecture, I show the students various rock samples and photomicrographs in which they can see cement examples. I outline the different cement minerals and shapes and how they can be used to interpret past diagenetic conditions (eg., gravitational "pendant" calcite cements indicate that the host sediment was once in a vadose zone with groundwater rich in calcium and carbonate). I also discuss types of pores during these lectures and the ways that pores form. We also discuss criteria for recognizing cements. After two one-hour lectures about cements, we have a lab exercise in which the students are given ~10 samples (including hand samples and thin sections) and asked to sketch and describe the cement types. The next one-hour lecture focuses on neomorphic processes and their products, including replacement, recrystallization, and polymorphic transition. As part of the lecture, we look at photomicrographs and hand samples that illstrate various neomorphic features, such as replacement dolomite and replacement chert. We establish criteria for distinguishing cements from neomorphic fabrics. This lecture is followed by a lab exercise that presents the students with ~10 rocks and thin sections and asks them to sketch and identify neomorphic fabrics. This lab is follwed by another one-hour lecture on compaction features, dissolution evidence, and determining paragentic sequences. If I am short on time, that is all I do for diagenesis. However, ideally, I continue with a lecture focused on the "dolomite problem" and some case studies of other types of diagenesis, as well as a third lab assignment that combines cementation, neomorphism, compaction, dissolution, and paragenetic sequences. As part of this section, I also try to incorporate examples of methods other than petrology (eg., fluid inclusion studies, stable isotope studies, dating) that are used for diagenetic studies. Later in the course, we take several field trips in which the students examine diagenetic features.
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In this activity, students view a Quicktime video animation based on data …
In this activity, students view a Quicktime video animation based on data from the North American Volcanic and Intrusive Rock Database (NAVDAT) to learn about the history of volcanism in the western U.S. during the last 65 million years. Students are guided through the complex data-rich animation with a series of instructions and study questions which highlight time-space-composition relationships and link to plate tectonics.
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This module teaches basic concepts in igneous petrology through relating hand specimen …
This module teaches basic concepts in igneous petrology through relating hand specimen identification of lavas to major element geochemistry, using the Central American volcanic arc as an example.
Using planetary maps, students will be able to read cartographic information and …
Using planetary maps, students will be able to read cartographic information and compare the environmental conditions of Io to those Earth. They will understand the conditions needed for life to exist, and be able to explain why it cannot exist on Io.
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