America's most famous drought resulted in an environmental disaster called the Dust Bowl. From 1931 to 1939, a five-state region of the Great Plains received little rain and experienced horrendous dust storms that stripped the land of its topsoil. The event went on to shape the demographics of the American West as thousands of people migrated out of the plains and on to western states.
In this activity, students will watch a PBS video and/or interact with the video's companion website. They will also examine maps and animations that show the distribution of drought patterns over the past 300 years; these maps were reconstructed from environmental records. Finally, students will examine the amount of time different areas spend in drought.

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This lab activity introduces students to overfishing, using Georges Bank groundfish as a case study. In Part A, students learn about overfishing by examining trends in annual haddock landings and mortality in Georges Bank from 1969-2016. In Part B, they learn about what it means for a species to be overfished by examining trends in Georges Bank Atlantic cod recruitments and spawning biomass from 1978-2014. In Part C, students explore the issue of the still-collapsed cod stocks and the role ocean warming may play in the failure to for the stock to rebound.

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In the previous lab, students explored the characteristics of the ocean environment in which coral reefs thrive. Unfortunately,there are a number of factors, both natural and anthropogenic (resulting from human activities), that can alter the ocean environment and threaten the health of coral reef ecosystems. In this activity, students will examine the three main factors that disrupt corals.

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Students have been examining Earth as a system of interacting parts, initially from the local perspective but more recently from the regional and global perspectives. In order to fully understand the Earth as a system and how its components interact with each other, students need to consider change over time. On relatively short times scales, these changes are related to the fact that the solar energy that drives the Earth system passes through an atmosphere that varies across space and time before reaching a spinning sphere. Across longer seasonal and annual time scales, these changes are more specifically related to the differential heating that results from the tilt of Earth's axis and Earth's orbit around the sun. At this longer-term global scale, it may be easier to see the repeating patterns of change across space and time and to infer how changes in one sphere may be linked to changes in others.

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When populations live in areas where natural resources are scarce, conserving them becomes critical for survival. The case study presented in this lesson introduces students to a real drought that has been developing in the Colorado River basin for many years. The Colorado River is the major source of water for people in the driest part of the United States. More than 30 million people in 7 states depend on this river as the primary source of their water.
In this lesson, students discover how changes in climate over the Colorado watershed are reducing the amount of fresh water available in the river. They also see how the population of the region that uses this water has grown, resulting in increasing demands on a dwindling resource.

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Students examine interactions and feedback between the cryosphere and atmosphere. In the first part of this investigation, students do a hands-on activity to explore albedo and how sea ice helps regulate global temperatures.

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Students graph the relationship between air pressure and wind speed in 2005's Hurricane Katrina and for the entire 2005 hurricane season. From their analyses, they come up with an estimate of the minimum air pressure that is likely to result in hurricane-force winds of 65 knots or higher.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

Students have been examining Earth as a system of interacting parts, initially from the local perspective but more recently from the regional and global perspectives. In order to fully understand the Earth as a system and how its components interact with each other, students need to consider change over time. On relatively short times scales, these changes are related to the fact that the solar energy that drives the Earth system passes through an atmosphere that varies across space and time before reaching a spinning sphere. Across longer seasonal and annual time scales, these changes are more specifically related to the differential heating that results from the tilt of Earth's axis and Earth's orbit around the sun. At this longer-term global scale, it may be easier to see the repeating patterns of change across space and time and to infer how changes in one sphere may be linked to changes in others.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

This activity allows student to investigate how hurricanes transfer heat by conducting hands-on experiments.

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In this lab, students apply the concepts of earlier lessons to their own community. They begin by exploring economic, environmental, and social impacts of drought. Students then prepare for and stage a mock community meeting to draw up plans to face an upcoming drought.

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Human-induced nutrient loading of the world's oceans has been linked to increased and prolonged algae blooms, sometimes with potentially deadly consequences. In this investigation, students will create their own algal blooms, analyze satellite images of chlorophyll concentrations in the Sea of CortÃs, and learn about two alarming consequences of excessive algae growth-—dead zones and harmful algae blooms (HABs).

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In this activity students explore how to reduce vulnerability to drought risk through mitigation strategies. Students investigate one or more of four technology-based mitigation strategies by reading articles or viewing short podcasts and completing hands-on activities. Students make a presentation or poster to communicate their findings to the class.

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Students explore issues related to the rapid intensification of hurricanes. They become familiar with the concepts of heat energy and the specific heat of water and interact with animations of sea surface temperature images to identify the Gulf Stream and the Loop Current. Students use NOAA View and Google Earth, free data-image tools, to explore visualizations of heat content in the Gulf of Mexico just before Hurricane Katrina. The examine a plotted path of Katrina as an overlay on these visualizations and observe changes in the heat content of Gulf waters as the hurricane passed over it.

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Students search for images and video that illustrate the dangers that hurricanes pose to property and life. They consult Morbidity and Mortality Reports to find the common causes of death attributed to hurricanes and to discover the challenges to counting deaths attributed to Hurricane Katrina in 2005. Students explore hazards from storm surge, high winds, and inland floding and outline a plan that would prepare them to survive a hurricane.

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"Earth's Energy Budget and the Greenhouse Effect" is a lab activity in which students use computers and scientific applications software to access, display, describe, analyze, and interpret global, climate-related data sets related to the earth's energy budget and the greenhouse effect.

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In this physical geography lab, students examine the relationship between solar altitude, solar declination, and temperature regimes. Using data collected in the field, mathematical relationships, and temperature records available on the Internet, students compare the insolation and climate in their location to that of other locations.

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This Evolution video segment describes how the famous track fossils known as the Laetoli footprints might have been formed and what they can reveal about the creatures who left them.

This activity is an on-line research activity in which students research different Minnesota lakes and determine their physical characteristics, chemical characteristics, and the overall health of the lake.

Students use the modeling program STELLA to see what combinations of runoff and evaporation might have lead to Pleistocene lake level oscillations in California's Owens River system.

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In this Nature video, follow geologists as they retrieve samples from a fresh batch of Kilauea's molten lava.