Title |
Comment |
Keywords |
Benefits of Volcanoes
|
25:42 - 26:30 (00:48) / 1.2 MB
|
"James Sadd", volcano, "geologic hazard", soil, plant, agriculture, "hot spring", geothermal, energy, Iceland
|
Conclusion
|
26:30 - 26:59 (00:29) / 0.7 MB
|
"James Sadd", volcano, agriculture, "ocean basin", water, ocean, atmosphere, geologist
|
Weathering and Soils
|
30 minutes / n.a.
|
weathering, soil, "chemical weathering", water, rock, plant, erosion, "mechanical weathering", granite, agriculture, climate, "acid rain"
|
Destruction of Soil
|
17:49 - 18:18 (00:29) / 1.2 MB
|
weathering, soil, humans, "Earth's surface", agriculture
|
Tropical Soil
|
18:18 - 19:20 (01:02) / 2.1 MB
|
weathering, soil, tropic, jungle, "fertile soil", agriculture, "rain forest", vegetation, humus, nutrient, tree, plant, leaching, forest, erosion, wasteland
|
Soil Erosion
|
19:20 - 20:45 (01:25) / 2.0 MB
|
"Richard Hazlett", "soil erosion", tropic, "rain forest", "Midwestern United States", "dust bowl", draught, wind, soil, weathering, dust, grassland, agriculture, glacial, plant, crop, topsoil, farming
|
Dust Bowl In Retrospect
|
20:45 - 21:21 (00:36) / 1.0 MB
|
"Richard Hazlett", weathering, soil, "dust bowl", "U.S. Soil Conservation Service", agriculture, "natural resource"
|
Soil Management and Conservation
|
21:21 - 22:50 (01:29) / 2.7 MB
|
"Wayne Soppeland", "Rick Aguayo", "Mojave Desert", soil, weathering, crop, erosion, water, "soil management", agriculture, "U.S. Soil Conservation Service", irrigation, "soil survey", farming
|
Flood Plains
|
12:12 - 13:14 (01:02) / 1.0 MB
|
"James Sadd", meander, flood, floodplain, flatland, river, "river channel", riverbank, bank, landscape, humans, Tigris, Eurphrates, Mesopotamia, Yangtze, "Huang Ho", China, Nile, Egypt, crop, "muddy sediment", nutrient, deposition, irrigation, "geologic hazard", agriculture
|
Uses of Groundwater
|
01:39 - 02:47 (01:08) / 1.5 MB
|
"James Sadd", groundwater, water, irrigation, agriculture, industry, lake, river, "Earth's surface", pollution, geologist, soil, "surface water", replenishment, infiltration
|
Development and Overgrazing
|
19:48 - 20:49 (01:01) / 1.9 MB
|
vegetation, humans, atmosphere, plant, tree, air, climate, rainfall, semi-arid, desert, desertification, agriculture, grazing
|
Dust Bowl
|
20:49 - 21:42 (00:53) / 1.1 MB
|
desertification, desert, "United States", "Great Plains", "ecological balance", rainfall, plant, agriculture, grazing, soil, drought, "dust bowl", "soil conservation"
|
Prevention of Desertification
|
23:44 - 24:47 (01:03) / 1.6 MB
|
"Art Montana", desertification, "water conservation", groundwater, agriculture, deforesting, vegetation, subtropic, wind, topsoil, tree, Africa, pollution
|
Introduction to Glaciers
|
00:40 - 01:38 (00:58) / 1.5 MB
|
introduction, "James Sadd", landscape, glacier, mountain, Alps, "Himalaya Mountains", Rockies, "Yosemite Valley", "Sierra Nevada", river, valley, lake, "North American Continent", "Great Lakes", loch, Scotland, agriculture, soil, China, "Soviet Union", Canada, "glacial ice", rock, silt, transportation, wind, "fertile soil", erosion
|
Introduction to Preserving the Legacy
|
00:40 - 02:20 (01:40) / 1.2 MB
|
introduction, "James Sadd", "H. G. Wells", humans, civilization, mining, agriculture, Roman, "Industrial Revolution", England, gravity, heat, "human power", technology, animal
|
Geology School Keywords
|