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Displaying 21 - 30 of a total of 52 Frequently Asked Questions

The National Oceanic and Atmospheric Administration‘s (NOAA) map of sea surface temperature anomalies shows warmer surface water temperatures in the eastern equatorial Pacific Ocean during El Niño. Image Credit: NOAA
What are El Niño and La Niña?
American Geosciences Institute
Survey of water quality in a mine water filtration pond. Image Credit: Ron Nichols, USDA NRCS
What are environmental regulations on mining activities?
American Geosciences Institute
Photograph of tar sands mining, Alberta, Canada
What are tar sands?
American Geosciences Institute
An early example of a floating offshore wind turbine. Image Credit: NREL/Photo by Senu Sirnivas
What are the advantages and disadvantages of offshore wind farms?
American Geosciences Institute
An irrigation canal in Montana. Image Copyright © Marli Miller, University of Oregon. http://www.earthscienceworld.org/images
What are the effects of contaminants on water quality?
American Geosciences Institute
Inundation at Pago Pago, American Samoa, from the 2009 Samoa tsunami. Image Credit: NOAA/NGDC
What are the natural warning signs for a tsunami?
National Oceanic and Atmospheric Administration
Wastewater disposal facility in Colorado. Image Credit: USGS/Photo by William Ellsworth
What are underground injection wells used for?
American Geosciences Institute
Iron in the water from mine waste (tailings) at the Opportunity Tailings Pond, Anaconda, Montana. Image Copyright © Stuart Jennings, Montana State
What can be done to prevent or clean up acid mine drainage?
American Geosciences Institute
Alaska Mountain Range, Credit: USGS/Photo by John J. Mosesso
What controls natural water quality?
American Geosciences Institute
A hydraulic fracturing operation is underway at this drilling pad in the Marcellus Shale gas play of southwestern Pennsylvania. Image Credit: USGS/Photo by Doug Duncan
What environmental issues are associated with hydraulic fracturing?
U.S. Geological Survey

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Popular Frequently Asked Questions

Mt. St Helens following its catastrophic 1980 eruption. Image Credit: U.S. Geological Survey/Photo by Tom Casadevall
How many active volcanoes are there in the United States?
U.S. Geological Survey
Rare earth elements include 17 elements: Yttrium, Scandium, and the Lanthanide Series. Image Credit: Peggy Greb, Agricultural Research Service, USDA
What are rare earth elements, and why are they important?
U.S. Geological Survey
Mine trucks moving material from the Cripple Creek and Victor Gold Mines in Colorado. Image Credit USGS/Photo by Yolanda Fong-Sam
What are the main methods of mining?
American Geosciences Institute
Total primary energy use in the United States in 2017 by source and sector. Image Credit: U.S. Energy Information Administration
What are the major sources and users of energy in the United States?
U.S. Energy Information Administration
An early example of a floating offshore wind turbine. Image Credit: NREL/Photo by Senu Sirnivas
What are the advantages and disadvantages of offshore wind farms?
American Geosciences Institute