Adaptations of Cave Critters Activity Source: Adapted with permission by National Park Service Caves with the National Natural Landmark (NNL) designation are some of the most fascinating of the thousands of caves around the world, and each one is unique. Caves’ special features are the product of various types of rock, their geologic setting, local climate, and time. This diversity in cave environments provides unique habitats for many different species of plants, animals, and other types of organisms. [Read More]

Chocolate Rock Cycle Activity Source: The Geological Society of London. Adapted with permission. How sweet is this activity? It’s an introduction to the rock cycle using chocolate! Chocolate can be ground into small particles (weathered), heated, cooled, and compressed — just like rocks. Unlike rocks, chocolate can undergo these processes safely and at reasonable temperatures. Use your chocolate to create “sedimentary,” “metamorphic,” and “igneous” chocolate. And at the end of it all, make a tasty treat! [Read More]

Climate and Temperature Activity Source: Soil Science Society of America. Adapted with permission. There are many factors that combine to form soil, an important, slowly renewable resource. Some of these factors include climate, organisms, relief, parent material, and time. Soil provides the food, fiber, and building materials to nourish, clothe, and house Earth’s inhabitants. How does climate help soil to form? In warm, moist climates such as those in tropical rainforests, organic (formerly living) material breaks down most quickly. [Read More]

Critical Zone Activity Source: Critical Zone Observatories The Critical Zone (CZ) is defined as the zone at Earth’s land surface extending from the top of the vegetation canopy through soil to subsurface depths at which fresh groundwater freely circulates. This is the zone where most terrestrial life — including humanity — resides. The U.S. Critical Zone Observatories (CZOs) provide important platforms for studying processes occurring in this zone. The CZOs aim to advance interdisciplinary studies of Earth surface processes, partly to recognize and predict variations in processes resulting from humans’ land use and climate change. [Read More]

Density of Minerals Activity Source: Adapted with permission by Minerals Education Coalition; Society for Mining, Metallurgy, and Exploration. Density is an intrinsic physical property of minerals that relates to the composition of the mineral and to the pattern in which the mineral’s atoms are arranged. “Intrinsic” means that the property is the same for the mineral, no matter what the size or shape of the sample. In this activity, students will measure and compare the densities of minerals. [Read More]

Dig Into Soil Activity Source: Wendy Greenberg, Soil Science Society of America. Adapted with permission. Soil scientists often examine soils and record soil data outside. Soil is not just topsoil; it includes other horizons (soil layers) underneath the topsoil. So soil scientists use shovels or soil augers to get samples of many soil horizons. They record soil colors, textures, and types of living organisms for various soil horizons. They also record the location, vegetation, and topography of each soil. [Read More]

Digging Into Soil Activity Source: American Geophysical Union. Adapted with permission from “Soils Sustain Life,” AGI. Materials Piece of heavy duty PVC pipe about one inch in diameter and 10 inches long Piece of wood doweling that will fit inside the PVC pipe Hammer Wood block Leather garden glove Hand lens or microscope Non-toxic marker Large sheet of white posterboard Six clear plastic sandwich bags Plastic knife Tools for separating soil, such as tweezers, tongue depressor, drinking straw Paper towels (for clean up) Procedure 1. [Read More]

Dynamic Wetlands Activity Source: Nebraska Earth Systems Education Network, School of Natural Resources By Roseanne Williby Purpose To increase student awareness of the value and importance of our wetlands Background What is a wetland? Wetlands are called one of the world’s most productive ecosystems. They produce more plant and animal life than woodlands or prairies. Characteristics, like water levels, naturally change seasonally and annually. Wetlands are in transition between aquatic and terrestrial systems where the water table is usually at or near the land surface or the land is covered by shallow water. [Read More]

Energy Efficiency Activity Source: Schlumberger Excellence in Educational Development. Adapted with permission. In Swords into Plowshares: At Home in a Missile Silo, Tony Crossley says of his underground home: “The winters are bitterly cold, the summers feature spectacular afternoon thunderstorms and occasional tornadoes, and throughout the year we get days when the wind is very strong. Underground it’s always quiet and peaceful, and no matter how cold it gets outside, the interior never freezes, even though we don’t have any heating yet. [Read More]

Exploring Caves

Activity Source:

U.S. Department of the Interior, U.S. Geological Survey

Caves Poster

Caves Guide