Exploring Geoheritage Through EarthCaching Activity Source: Adapted with permission by Geological Society of America. An EarthCache is a special site that people can visit to learn about a unique geoscience feature or aspect of our Earth. Visitors to EarthCache sites can see how our planet has been shaped by geological processes, how we manage the resources and how scientists gather evidence to learn about the Earth. EarthCaches are part of the greater global adventure game of Geocaching. [Read More]

Latitude and Longitude Activity Source: Geological Society of America, Adapted with permission. You may have seen or used Global Positioning System (GPS) devices in cars or on camping trips. These devices use data from satellites orbiting the Earth to locate places on our planet. GPS devices describe the locations to us in the form of latitude and longitude coordinates. Citizen scientists involved in the Geological Society of America’s EarthCaching project (http://www. [Read More]

Mapping Vertical Movements Activity Source: UNAVCO By installing GPS stations that measure the movement of Earth’s crust, UNAVCO advances geodesy, the study of Earth’s shape, gravitational field, and rotation. Each station has a receiver antenna that communicates with satellites to measure, within millimeters, how Earth is moving. Some movements are horizontal, the sliding of tectonic plates. Some movements are vertical, as when Earth’s mantle either sinks or rebounds in a process called isostatic rebound. [Read More]

Survey Mark Hunting Activity Source: National Oceanic and Atmospheric Administration. Adapted with permission. Geodesy is the science that measures and represents the size and shape of Earth. In the United States, survey reference points are developed and maintained by NOAA’s National Geodetic Survey (NGS). In this activity, you will find data on the location and description of survey marks in your area and—if you like—search for them through a variation of geocaching. [Read More]