APES 14,15 – Flashcards

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Weather is a term for atmospheric moisture and temperature on a
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short-term
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Climate is a description of ________ weather conditions.
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long-term, regional
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he earth's earliest atmosphere was probably composed mainly of __________, which has/have since largely dissipated into space.
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hydrogen and helium
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Aerosols are
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tiny particles and droplets suspended in the air.
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The correct sequence of atmospheric zones upward from the earth's surface is
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troposphere, stratosphere, mesosphere, thermosphere.
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The "ozone hole" that causes concern among scientists and the public is an ozone depletion in the
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stratosphere.
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Insolation is a term that means
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incoming solar radiation.
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Albedo is a term describing the Earth's
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reflection of solar radiation.
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Energy absorbed at the Earth's surface is radiated back to space in the form of
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infrared radiation (heat)
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Much of the ultraviolet light from the sun is absorbed by _______ as it passes through the atmosphere.
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ozone
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One reason the energy flux is considerably lower at the poles than at the equator is because
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sunlight comes in at an oblique angle
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Convection currents in the atmosphere are driven by
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the different temperatures and densities of warm and cold air masses.
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When an area of the earth's surface becomes very hot, the air above it
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warms, expands, and rises.
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_______ is/are the driving force(s) of the hydrologic cycle.
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Convection currents
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When cool, dry air sinks from the upper atmosphere toward the Earth's surface, it is
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compressed and becomes warmer.
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The Coriolis effect is caused by the
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the earths rotation
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Rising, expanding air masses create a region of
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low pressure
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Two jet streams run over the Northern Hemisphere. These are generally located
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along the northern border of Mexico, and through Canada and the northern US.
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The boundary between two air masses of different temperature and density is known as a
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front
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A cold front is a situation in which cold air
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displaces a mass of warmer air.
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As a cold front advances, the warm air is forced to
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rise, cool, and release its moisture.
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Narrow, violent bands of rain and storms are characteristic of
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advancing cold fronts.
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Hurricanes are powered by
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heat released from condensing water vapor
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Why don't storms over land have as much energy as storms over oceans?
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Convection currents are intensified by the latent energy of condensation.
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Monsoons occur over India when air heated over the Indian subcontinent and the Indian Ocean
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is forced to rise when it meets the Himalayas
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When El Nino occurs every three to seven years, a mass of warm Pacific water that is usually pushed westward by trade winds
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surges back eastward toward South America.
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Computer models predict that doubled carbon dioxide levels could raise average temperatures by 1.4°C to 5.8°C. The difference between today's temperatures and the last ice age is about
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5°C.
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Most of the excessive carbon dioxide that is expected to cause global warming is generated by
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production of cement and clearing of forests. correct burning of fossil fuels.
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The greenhouse effect in the atmosphere occurs because
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CO2, water vapor, methanol, and other gases absorb infrared radiation
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Primary pollutants are those that are
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pumped into the air directly in dangerous forms
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Secondary pollutants
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become dangerous after reacting in the atmosphere.
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________ is/are examples of secondary pollutants.
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Photochemical oxidants
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Fugitive emissions are produced by
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strip mining, rock crushing, and other dust-producing activities
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Criteria pollutants are those that
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contribute the most to air quality degradation
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what criteria pollutants result from burning coal?
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sulfur dioxide
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Sulfur trioxide
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is formed by the oxidation of sulfur dioxide. reacts with water to form sulfuric acid. is a major component of acid rain. is a secondary pollutant.
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A common example of a photochemical oxidant is
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NO2.
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Carbon monoxide is produced by
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incomplete burning of fuels.
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Anthropogenic sources of carbon dioxide levels in the atmosphere are
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increasing at the rate of about 0.5 percent per year.
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The most common metallic air pollutant is
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lead.
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An aerosol is
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any liquid droplet or solid particle suspended in air.
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what is not a volatile organic compound?
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chlorofluorocarbons
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A major source of VOCs is
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incomplete burning of hydrocarbons.
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You just picked up your dry cleaning and are headed home in your car. Your windows are up so you are probably not smelling anything from the car exhaust or other sources on the road. What criteria pollutant are you probably smelling?
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Volatile organic compounds
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Ozone is produced by
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photochemical oxidation.
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Formaldehyde is an especially problematic indoor pollutant because it is
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used in so many household materials
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Radon in houses comes from
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radioactive decay in the Earth below a house.
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A temperature inversion occurs when
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stable warm air overlays cold air.
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Los Angeles has especially bad inversion problems because it
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is in a warm climate and is partly ringed by mountains.
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Stable air masses over cities and warm updrafts between tall buildings often create _________ in and near cities.
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dust domes of suspended pollutants
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Native peoples living in the Canadian Arctic have some of the highest recorded PCB concentrations in their bodies because of
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long-range transport of airborne pollutants.
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Pollutants such as chlorofluorocarbons deplete atmospheric ozone
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when chlorine-containing molecules are oxidized at the expense of O3.
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There are serious signs that ozone depletion may lead to
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UV-caused skin cancers. UV-caused blindness
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An irreversible obstructive lung disease is called
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emphysema
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Sudbury, Ontario's copper-nickel smelter is notorious for having
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destroyed the local ecosystem with sulfur-laden smoke
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Which of the following is the best example of synergistic effects
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the prevalence of cancer among smokers exposed to asbestos fibers
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Acid precipitation often occurs downwind from _______ industries.
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coal-burning or smelting
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On a pH scale, pH 4 is _______ as pH 8.
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10,000
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What type of buildings and monuments are most susceptible to acid damage?
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limestone and marble
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Large filter bags can be used by industries to _________ airborne pollutants.
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trap
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Electrostatic precipitators prevent fly ash escape by
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using electrodes to give particles an electrostatic charge.
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Mixing limestone with coal can reduce sulfur emissions because the limestone's
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calcium bonds with the sulfur.
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Cars use ______ to reduce nitrogen oxide emissions.
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catalytic converters.
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National Ambient Air Quality Standards (NAAQS) set __________ for acceptable public exposure to specific pollutants.
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time and concentration limits
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