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83 Cards in this Set
- Front
- Back
Volcanoes that erupt basaltic lavas:
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produce large shield volcanoes
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Volcanoes that erupt andesitic lavas:
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may erupt explosively
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A volcanic mudflow called lahar is:
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formed when hot ash melts snow on a volcano
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Smooth, very fluid, ropey lava flows are called:
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Pahoehoe
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Pyroclastic material greater than 2 mm and smaller than 64 mm is called:
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cinder
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Nuee Ardentee is another term for:
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pyroclastic flow
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Volcanoes in Hawaii are:
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shield volcanoes
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Basaltic pillow lavas are typical for:
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mid-ocean ridges
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Andesitic volcanoes are likely to form at:
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convergent subduction boundary
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What is tephra?
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all types of volcanic debris explosively ejected from a volcano
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Which type of volcanoes is cone shaped?
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composite
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Where do shield volcanoes occur?
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above hot spots located below the lithospheric plates
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Which of the following gases is emitted during volcanic activity?
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a. water vapor
b. carbon dioxide c. sulfur dioxide d. hydrogen sulfide e. all of the above Ans:e |
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Possible methods of predicting volcanic eruptions include?
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a. topographic monitoring of tilting or swelling of the volcano
b. monitoring seismic activity c. geophysical observations of thermal and magnetic properties d. monitoring of gas emissions e. all of the above |
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Tropical cyclones:
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originate only in warm waters
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Wind speed in a hurricane
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can exceed 200 mph
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A hurricane watch
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designates a part of the coast as likely to be hit (50% or more) within 36 hours
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The point of landfall of a hurricane
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is averaging within about 119 miles of its predicted landfall
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Category 5 in the hurricane Saffir Simpson damage potential scale is defined by:
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wind speed more than 155 mph
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Tides characterized by one high and one low tide each day are called:
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diurnal tides
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Microtidal coasts have tidal range:
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less than 2 meters
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A tide with a greatest amplitude between the high water and low water occurring when the moon and the sun are on the same side of the earth is called:
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spring tide
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Gravitational attraction is:
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inversely proportional to the square of distances between bodies of matter
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Distance between two successive wave peaks is called:
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wave length
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Which of the following does not affect the size of waves?
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wave shape
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What is wave period (P)?
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the time in seconds for succesive waves to pass a reference point
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Flat backshore areas on beaches formed by deposition of sediment as waves rush up are called:
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berms
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If all existing glacial ice melt
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a. the Cancer Corridor would be under water
b. sea level would rise about 150 feet c. Sacramento would become a harbor town d. all of the above |
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E 10 lines are defined by:
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a line where the erosion is expected to erode to in 10 years
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The global water cycle involves which of the following processes?
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a. Water evaporates from the ocean into the atmosphere.
b. Water precipitates from the atmosphere onto land. c. Water flows into the oceans. d. a and b above e. all of the above |
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Consumptive use of water in the United States is:
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about 400 million m3/day
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What is the name of the bond that holds two water molecules together?
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hydrogen
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Solid ice is:
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less dense than liquid water
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In order to melt 1 g of ice at temperature O0 C
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we need to add 79.7 calories
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A typical amount of dissolved substances in average river water is:
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120 ppm
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Which of the listed ions is NOT a major ion in drinking water:
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selenium
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A measure how readily fluids can flow through a sediment or a rock is called:
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permeability
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The top of the zone of saturation is called:
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water table
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An aquifer which upper surface is called water table is:
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unconfined
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An aquifer in which water is under additional hydrostatic pressure and which is always fully saturated is referred to as being:
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confined
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The hypothetical surface that measures the height to which hydrostatic pressure in a confined aquifer would raise the water in a well is the:
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potentiometric surface
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Loosing stream is also called:
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influent
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Delta aquifer in a lower Ogden Valley is:
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a confined aquifer composed of deltaic deposits of the Weber River
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Which of the substances is a nutrient released typically by human activity?
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phosphorus
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A high BOD level indicates:
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a high level of decaying organic matter
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Which of the following is not a toxic substance?
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rock salt
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Which of the following is not a point source of pollution?
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urban runoff
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What percentage of the 175,000 waste disposal sites in the USA might be producing contaminant plumes?
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75%
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What percentage of hazardous wastes in the USA is burned?
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20%
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How many underground storage tanks exist in the USA?
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3,000,000
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Enforceable concentration of a contaminant allowed in drinking water is called:
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Maximum Contaminant Level
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Unenforceable health goals determined for pollutants in water are called:
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Maximum Contaminant Level Goal
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The governmental organization responsible for setting safety standards is:(introduced CERCLA)
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Environmental Protection Agency
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Which of the acts established "Superfund" to clean up hazardous waste disposal sites?
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1980 CERCLA Act
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Which of the acts established the control of nonpoint sources of water pollution?
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1987 Water Quality Act
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The "Cancer Corridor" is located in:
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Louisiana
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A good criterion for recognizing saltwater intrusion in an aquifer is the amount of:
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chloride
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Which of the following is not a method of groundwater treatment?
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saltwater intrusion
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Most solid waste (our trash can) is composed of:
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paper
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Recycling aluminum saves .......... of the energy required to make a new one from ores.
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95%
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Paper comprises ................... of landfill volume.
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40%
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Which of the following is not a method of solid waste disposal?
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vapor extraction
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A potentially explosive gas that is generated in landfills is:
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methane
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Landfills tend to:
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a. leak
b. create explosive gasses c. pollute groundwater d. all of the above |
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Which of the landfill types use soil processes to reduce contaminants in the leachate before they reach groundwater or surface water?
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the natural attenuation landfills
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Where are the best sites for landfills?
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in arid regions
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How can hazardous waste pollutants from a solid waste disposal site enter
the environment? |
a. Heavy metals are retained in the soil.
b. Paper, plastics, and other undesireable waste may be transported off site by wind. c. Gasses can volitalize and enter the atmosphere. d. Soluble substances can pass through fill and soil to the groundwater system. e. all of the above |
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Operators of landfills must ensure that monitoring of the landfill continues for ...... years after closure.
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30
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What is the basic idea of a secure landfill?
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a. collect and treat the leachate
b. confine the waste to a particular location c. control the leachate d. detect possible leaks e. all of the above Ans:e |
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What is a problem with deep well disposal?
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It can cause earthquakes.
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Low level radioactive wastes should be isolated from the environment for about:
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5000 years
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Which of the isotopes are not produced by nuclear reactors?
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calcium 40
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How many half lives are required for radioactive isotopes before the material is no longer considered a health hazard?
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10
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The United States, with about 5% of the total world's population, uses about what percentage of the world's total, annual energy production?
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25%
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Which one supplies the largest percentage of U.S. annual energy consumption?
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petroleum
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A large power plant produces typically about:
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1000 megawatts
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Which of the rocks has the largest carbon content?
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anthracite
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Which of the listed gases is the most common natural hydrocarbon gas?
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methane
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Fission of 1 kg of uranium oxide releases the same amount of energy as the burning of
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10 20 tons of coal
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Which of the uranium isotopes is the most common?
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U 238
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The natural concentration of uranium in the earth's crust is:
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2 ppm
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Which is NOT a major uranium bearing deposit
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placer deposits in river or delta deposits
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Which two produce energy from a hydrogen fusion reaction?
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oxygen, neutrons
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