1
The National Park Service brings you information on geologic time and how we tell the age of the Earth. Learn about fundamental geologic concepts, view a geologic time module, view a video on the Big Ideas in Geoscience, and look at fossils and rocks throughout geologic time.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
Few schools are within walking distance of a federally designated wilderness. However, many schools are within walking distance of land with wild elements. Students can look for examples of places with wild elements on or near their school grounds. Then they can duplicate the activity in a wilder...
Grade Level   5 6 7 8
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3
Dendrochronologists use tree rings to go back in time to learn more about past climate. Using straws to recreate tree rings, you can learn how dendrochronologists work. Construct a 50-year climatic history on a three-meter time line. In this activity, students use the spacings between tree rings to...
Grade Level   5 6 7 8 9
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4
Geologic time can be difficult for people to understand. Our own lives are so short when we compare them to the age of the Earth, that the hundreds of millions of years of geologic time are almost too much to grasp. But for us to understand Earth activities today, we must have at least some basic...
Grade Level   5 6 7 8
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5
Traditional geologic maps — sometimes crisscrossed with lines, blotted with colors, and marked with strike and dip symbols — have been used to depict the geologic makeup of the Earth for many years. New technologies such as satellite-enabled remote sensing are allowing geoscientists to create...
Grade Level   6 7 8 9 10 11 12
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6
In this activity, you’ll  investigate dynamics in Earth’s crust that explain multiple Earth science phenomena.
Grade Level   5 6 7 8 9 10
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7
A volcano is a vent in the surface of the Earth through which magma and gasses erupt. Volcanic eruptions are among the Earth's most powerful and destructive forces, but volcanoes are also creative. Volcanoes have also shaped the Earth's landscape, as many of our mountains, islands, and plains have...
Grade Level   5 6 7 8
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8
Ocean currents — the continuous, directed movement of ocean water — affect regional climates and alter the biological and chemical characteristics of seawater. Currents can flow for long distances both at and below the ocean’s surface. Wind drives surface currents, whereas density often drives...
Grade Level   6 7 8
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9
"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. As the glaciers melt they leave behind...
Grade Level   5 6 7 8 9 10 11 12
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10
At the close of the 18th century, the haze of fantasy and mysticism that tended to obscure the true nature of the Earth was being swept away. Careful studies by scientists showed that rocks had diverse origins. Some rock layers, containing clearly identifiable fossil remains of fish and other forms...
Grade Level   5 6 7 8 9 10 11 12
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11
Core samples are small portions of a formation taken from an existing well and used for geologic analysis. The sample is analyzed to determine porosity, permeability, fluid content, geologic age, and probable productivity of oil from the site. Drilling is the only way to be sure that oil and gas...
Grade Level   5 6 7 8 9
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12
This activity allows students to experience what rocks and minerals go through during the rock cycle. The activity explains how to manipulate chocolate using heated water and a knife into different states representing metamorphic, igneous, and sedimentary rocks. Chocolate can be ground into small...
Grade Level   3 4 5 6 7 8
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13
To learn to read, write, and appreciate language and communication, it's helpful to find subject matter that's appealing, inspiring, and personal. The sky is a never-ending source of material that is available everyday to everyone. Get ready to set a course for sky exploration! The following...
Grade Level   K 1 2 3 4
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14
Over time, Earth's magnetic poles change strength and location. They also completely reverse directions episodically. The north magnetic pole is currently moving northwest at 40 kilometers per year. It moved from 81.3° N, 110.8° W in 2001 to 82.7° N, 114.4° W in 2005. (Learn more at...
Grade Level   7 8 9 10 11 12
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15
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...
Grade Level   7 8 9 10 11 12
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16
An earthquake occurs when massive rock layers slide past each other. This motion makes enormous vibrations, which travel from the site of the earthquake in waves. The waves (seismic waves) travel all the way through the Earth. Seismologists can record these waves when they reach Earth's surface...
Grade Level   6 7 8 9 10
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17
In this activity, students observe real fossils. The fossils are then used to make moulds. After the moulds dry, students can practice looking for the fossils by picking them out of a hardened mud mixture. Aster the activity, students should discuss how fossils are formed, where they can be found,...
Grade Level   K 1 2 3 4
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18
Is the ozone hole getting smaller? How much rain is in the cloud of a hurricane? How much sea ice is melting in the Arctic? For over 50 years, NASA scientists have been asking questions and collecting data from space-based satellites to study Earth's changing environment. Engineers and scientists...
Grade Level   6 7 8 9 10 11 12
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19
This activity includes a poster illustrating a story of two children exploring a cave, as well as a guide for exploring caves. The guide features cave diagrams, cave creation, and where to look for caves.
Grade Level   K 1 2 3
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20
On our ever-changing Earth, conditions may change quickly or slowly. Some changes come from natural processes; some from human activity. Satellites allow us to see conditions and track changes over time — in land use, forest health, land/water interface, and so on. Since 1972, Landsat...
Grade Level   6 7 8 9 10 11 12
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