Items Tagged as "human impact"

Acid Mine Drainage and Precipitates

Subjects: Ecology, Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
In this video, environmental scientists measure the pH of water to detect acid mine drainage.

Earth's Cryosphere: The Arctic

Subjects: Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
This video segment adapted from NASA investigates the cryosphere's role in North America, the extent of permafrost in the northern hemisphere, and how the polar regions play a role in regulating global climate.

Earth's Cryosphere: Antarctica

Subjects: Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
This video segment adapted from NASA uses satellite imagery to provide an overview of the cryosphere in the Antarctic. Learn about Antarctic features such as clouds, glaciers, ice streams, ice shelves, and icebergs.

Ozone Hole

Subjects: Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
This video segment adapted from NASA's Goddard Space Flight Center describes how CFCs, once widely used in refrigerators and aerosol cans, damaged the protective layer of ozone in our atmosphere.

Earth System: Ice and Global Warming

Summary:
This video segment adapted from NASA's Goddard Space Flight Center details how global warming may already be responsible for a significant reduction in glacial ice, which may in turn have significant consequences for the planet.

An Alaska Native Community Helps Seals

Summary:
In this video segment from First Alaskans Institute, learn about northern fur seals (laaqudan), their importance to the Alaska Native diet, and how the community of St. Paul Island participates in their conservation and protection.

Losing Permafrost in Alaska

Subjects: Ecology, Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
This video adapted from Spanner Films describes the effects of changes to permafrost, the frozen layer of soil and ice that underlies much of Alaska, caused by a warming climate.

Desert Tortoise

Summary:
This video segment from Outdoor Nevada examines threats to the desert tortoise population.

The Disappearing Aral Sea

Subjects: Earth Sciences, Science
Language: English
Grade Level: Gr. 6 | Age 12, Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18
Posted: Jun. 27, 2011   Posted by: Teachers Domain
Summary:
This visualization adapted from NASA features satellite images showing how more than 60 percent of the Aral Sea has disappeared during the last 30 years.

Peregrine Falcon

Summary:
In this video from Outdoor Nevada, Brian Wignall speaks with an ornithologist about the peregrine falcon, a majestic and endangered species that is one of the fastest animals in the world.


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