1
The ocean is the key element in Earth's hydrologic cycle (water cycle). Students will construct a simple model of the hydrologic cycle to help them visualize and understand the movement of liquid water and heat. The hydrologic cycle is the continual movement of water from one place to another and...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
Students will become familiar with fire terminology, realize how fire can be used as a management tool, and better understand the factors that need to be considered when planning a prescribed burn. In this activity the students will form opinions around fire management issues. They will then work in...
Grade Level   5 6 7 8
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3
Scientists, engineers, and others create geologic maps to determine the best places for people to settle, build, farm, and use land in a variety of ways. They also use geologic maps to monitor the ways that human activity might be changing the land itself over time. As the Geologic Map of Karst in...
Grade Level   6 7 8 9 10 11 12
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4
This activity will provide you with an introduction to a series of lessons — Survivor Earth — about water resources on Earth. You’ll investigate Earth systems by making observations in nature and identifying systems in the natural world. Ultimately, you will understand how the four spheres, or...
Grade Level   5 6 7 8
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5
"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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6
How do geologists understand the Earth’s history? In part, they measure the age of rocks and other natural materials by dating techniques. They can date rocks by gauging the amount of decay of radioactive elements. The time necessary for half of any given amount of one element (the “parent...
Grade Level   5 6 7 8 9
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7
"The """"Blue Goose"""" has been the symbol of the National Wildlife Refuge System since it was first drawn by Pulitzer Prize-winning cartoonist J.N. """"Ding"""" Darling, one of the greatest supporters of wildlife conservation in the 20th century. Naturalist and author Rachel Carson had a reminder...
Grade Level   3 4 5 6 7 8
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8
Raindrops contain more than just water. In addition to the small particles of dust around which water drops form, raindrops can contain chemicals found in the atmosphere. Often rain is slightly acidic. This “acid rain” can chemically affect (weather) materials it touches. The amount of...
Grade Level   6 7 8 9 10
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9
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...
Grade Level   6 7 8 9 10
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10
Soil is often overlooked as a natural resource. Like fossil fuels, we depend on it for energy in the form of foods. And, like fossil fuels, it is nonrenewable. Soil is a delicate balance of inorganic minerals, organic matter, living organisms, soil water, and soil atmosphere. The natural development...
Grade Level   6 7 8 9 10
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11
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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12
"Since 1970, oil and natural gas have provided more than half of the energy used each year in the United States to produce electricity, heat, transportation fuels, and many everyday products from balloons to vitamins. Oil and natural gas are forms of petroleum, a word that literally means...
Grade Level   6 7 8 9 10 11 12
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13
Why is CO2 increasing in the atmosphere? Who is doing it? Many people think that CO2 is “pollution-” so that clean burning should be a way to eliminate greenhouse gas emissions. In this demonstration, we review basic chemistry (see illustration) to realize that producing CO2 is an...
Grade Level   6 7 8
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14
EarthCaching is an exciting educational activity through which you can learn about Earth and the natural processes that shape our planet over time. By combining GPS technology with outdoor field experiences, EarthCaching allows students and others to experience the wonders of Earth in an entirely...
Grade Level   6 7 8 9 10 11 12
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