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Transcript
EX AM REVIEW P OW E R P O I N T 7 Over geologic time, global mean sea level has varied significantly. Which change is most likely responsible for an increase in global mean sea level? A erosion of sediment from a mountain range B mass extinction of marine organisms C formation of an ocean trench D melting of polar ice caps melting of polar ice caps Over geologic time, global mean sea level has varied significantly. Which change is most likely responsible for an increase in global mean sea level? A erosion of sediment from a mountain range B mass extinction of marine organisms C formation of an ocean trench D melting of polar ice caps melting of polar ice caps Many birds live in mountainous temperate forest ecosystems. Above the tree line on mountains, however, the ecosystems change. Few birds are found there. Many factors contribute to the lower number of birds seen above a mountain’s tree line. Which of these factors is abiotic? A limited food B no trees for shelter C.frequent high winds D high-flying predators frequent high winds Over-using an aquifer can lead to subsidence. Which other hazard would most likely be exacerbated by this subsidence? A climate change B earthquake C drought D flooding flooding Which would be the most sustainable way to increase the supply of potable(drinkable) water as the United States population grows? A Dig more deep wells to access fossil water. B Build more reservoir dams along rivers. C Increase the use of greywater for landscaping. D Increase the use of saltwater for cooling power plants. Increase the use of greywater for landscaping. Volcanoes release several gases during eruptions. Which of these gases has been shown to cause significant cooling of the climate for one or more years after an eruption? A water vapor B sulfur dioxide C carbon dioxide D hydrogen fluoride sulfur dioxide Biomes include both biotic and abiotic elements. Which set includes both biotic and abiotic elements of an estuary? A cordgrass, water salinity, great blue herons B ospreys, oysters, black needle rush C silt, air temperature, tidal pattern cordgrass, water salinity, great blue herons Which of the following is most responsible for reducing the availability of fresh water in this country? A aquifer depletion B reservoir evaporation C nonpoint source pollution Dboat and watercraft emissions nonpoint source pollution There are many methods of increasing the supply of fresh water to coastal cities. Which method takes the most energy? A drilling deep wells B desalination C conservation D building pipelines desalination Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen? A the ozone hole B the inversion layer C the greenhouse effect D the atmospheric continuum the greenhouse effect Sweet potatoes grow best in sandy, welldrained soil. In which North Carolina ecological region would you most likely grow sweet potatoes? Apiedmont B tidewater Ccoastal plain D mountain coastal plain The temperate deciduous forest and temperate grassland biomes have the same maximum temperature. Which of the following is a reason they have different plant and animal species? A they are at different altitudes B they are at different latitudes C the forest gets more precipitation the forest gets more precipitation What would be the most sustainable way to reduce farm use of river water in a coastal area? A Build desalination plants to convert seawater to fresh water for farms. B Dig deeper wells to pump more water from deeper aquifers to farms. C Use drip irrigation systems to water crops more precisely on farms Use drip irrigation systems to water crops more precisely on farms Earth’s ice sheets grow and retreat on a cycle of about 41,000 years. Which natural process is responsible for this cycle? A the eccentricity of Earth’s orbit B the wobble in Earth’s tilt on its axis C the El Niño Southern Oscillation D the changing size of the ozone hole Tides that have a maximum daily taildal range during new and full moos are called what? A high B neap C spring What is the carrying capacity of an ecosystem? A the total number of organisms alive at the same time in an ecosystem B the minimum number of individuals needed to have balance in an ecosystem C the total number of individuals, living and dead, that have been supported by an ecosystem D the maximum number of individuals that an ecosystem can support without harming the ecosystem the maximum number of individuals that an ecosystem can support without harming the ecosystem What will most likely happen to a stable ecosystem when a population of animals exceeds the ecosystem’s carrying capacity? A The ecosystem will improve. B The ecosystem will degrade. C The ecosystem will change type. D The ecosystem will remain unchanged. Auroras occur where Earth’s magnetosphere traps high-energy particles in which region of the atmosphere? A troposphere B stratosphere C thermosphere D exosphere Near which geologic structure are the youngest rocks on Earth found? A kettle hole B normal fault C active volcano Dglacial striation Oceanic crust is denser than continental crust. So when the two meet, oceanic crust subducts under continental crust. This fact best supports which claim? A. The hardest rocks on Earth are in the continental crust. B. The oldest rocks on Earth are in the continental crust. How does air density affect air pressure in a cyclonic storm? A Warm air rises, creating an area of low pressure under it. B Cool air rises, creating an area of low pressure under it. C Warm air rises, creating an area of high pressure under it. D Cool air rises, creating an area of high pressure under it. Which of these processes in the water cycle heats the atmosphere most as a cyclonic storm forms over the ocean? A Water droplets cluster into clouds. B Water droplets fall to Earth as rain. C Water vapor in the atmosphere condenses into droplets. Which renewable resource would be least affected by increasing global temperatures? A hydropower B wind energy C geothermal power D biomass energy The cost of a kilowatt hour of which kind of alternative energy is most likely to increase in the coming decades? A hydroelectric B biomass C solar D wind About 75% of the world’s active volcanoes are the result of tectonic activity around which plate? A North American Plate B African Plate C Pacific Plate DNazca Plate Which of these natural disasters is least likely to cause major damage to a prairie ecosystem? A a flood B a tornado C a hurricane D an earthquake