Glacier Slide Activity Source: National Park Service Objective You will be able to describe how a glacier carves an area and label the characteristics formed by the glacier’s movement. Background There are many glaciers all over Alaska. Flying into Lake Clark National Park and Preserve through Lake Clark Pass, you will see many glaciers. These glaciers were growing during the last Ice Age. Now many are retreating because Alaska is getting warmer. [Read More]

Making a Cave Activity Source: National Park Service. Developed by Kristen Lucke for the Views of the National Parks. Adapted with permission. Background We usually think of caves forming as rocks are dissolved and the particles are washed away, leaving hollow spaces behind. This activity simulates the way that dissolution, a chemical weathering process, leads to the formation of caves. When precipitation such as rainwater or snowmelt mixes with carbon dioxide from the air and from decaying plants in the soil, the result is carbonic acid. [Read More]

Making Your Own National Park Geologic Tour Activity Source: National Park Service, 2006. Adapted with permission. Background In this investigation, you’ll have the opportunity to learn about the many geological features in our country’s national parks. You might not realize this, but a large number of the national parks were created because of their amazing geology. Just think of the geological features of Yellowstone National Park, the Grand Canyon, Hawaii Volcanoes National Park, and many more! [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]

Parks Past, Present, and Future Activity Source: Adapted with permission by National Park Service. Over Earth’s 4.5 billion-year history, tectonic upheavals and colliding plates formed mountain ranges and carved out basins. Forces of erosion and weathering have been at work to break down these landforms. Records of these processes are imprinted on the land and define distinctive landscapes around the United States and in its national parks. The dynamic processes that formed the spectacular landscapes of many national parks remain active today. [Read More]

Predict the Flow Activity Source: NASA and AGI. Adapted with permission for the American Geophysical Union. Ever play with clay? Using a common modeling compound, you can form a “volcano” and examine its topography to predict which way lava will flow down its slopes. You could also investigate mud flows or debris flows. Materials 2 containers of modeling compound or clay Clear plastic bin Dark colored water (make sure that your modeling compound is a contrasting color from your water) Clear clipboard 2 transparencies and transparency marker Safety scissors Dish detergent Baking soda Vinegar Dropper Metric ruler Tiny plastic cup (about 2 oz. [Read More]

Rock Pop Activity Source: Geological Society of America. Adapted with permission. How can a cave form from solid rock? Most caves are found in limestone, a rock made of materials of calcium carbonate. This rock is unusual because the solid minerals it is made of easily dissolve in weak acids. The most common weak acid in the environment is actually water! This acid forms when carbon dioxide in the atmosphere dissolves in the rain water to form carbonic acid. [Read More]

Seismic Mapping Activity Source: The Society of Petroleum Engineers. Adapted with permission. Scientists use seismic technology to map patterns of rock formations below the surface of the Earth. Different types of rocks affect sound waves. Geologists use these sound waves to locate rocks that may contain oil and/or natural gas. You can explore this principle with a tuning fork and various rocks. Gently strike a fork against the rocks. Note variations in sounds produced by different rocks. [Read More]

Shoebox Geologist Activity Source: Adapted with permission by National Park Service. Earth processes such as volcanic eruptions, floods, landslides, and glaciers leave behind evidence of their passing in the form of layers known as deposits . By studying deposits of recent geologic events, geologists are able to better understand older deposits and identify the processes that caused them. A fundamental principle of geology is the Law of Superposition, which states that younger layers will be deposited on top of older layers. [Read More]

Sinkholes in a Cup Activity Source: Adapted from Project Underground, A Natural Resource Education Guide Background Sinkholes are natural depressions in the land caused when limestone and soils dissolve. They form when groundwater removes rock underground. They can form by slow gradual sinking or by sudden collapse of an underlying hole. Sinkholes are common in about one quarter of the U.S. You can usually identify them as circular or oval low spots in fields that may gather standing water after rains. [Read More]