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AP Environmental Science

Subjects : science, ap
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A basic substance; chemically - a substance that absorbs hydrogen ions or releases hydroxyl ions; in reference to natural water - a measure of the base content of the water.






2. The outermost shell of the atmosphere - between the mesosphere and outer space - where temperatures increase steadily with altitude.






3. The dosage level of a toxin at which a negative effect occurs.






4. The removal of select trees in an area; this leaves the majority of the habitat in place and has less of an impact on the ecosystem.






5. Smog resulting from emissions from industry and other sources of gases produced by the burning of fossil fuels - especially coal.






6. Radioactive wastes that produce low levels of ionizing radiation.






7. Each of the feeding levels in a food chain.






8. A cooling of the ocean surface off the western coast of South America - occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.






9. An introduced - normative species.






10. A model that's used to predict population trends based on the birth and death rates as well as economic status of a population.






11. Pollutants that are formed by the combination of primary pollutants in the atmosphere.






12. Devices containing alkaline substances that precipitate out much of the sulfur dioxide from industrial plants.






13. In a sewage treatment plant - the initial filtration that is done to remove debris such as stones - sticks - rags - toys - and other objects that were flushed down the toilet.






14. Poor nutrition that results from an insufficient or poorly balanced diet.






15. The removal of trees for agricultural purposes or purposes of exportation.






16. When water rights are given to those who have historically used the water in a certain area.






17. The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.






18. Radioactive wastes that produce high levels of ionizing radiation.






19. Any waste that poses a danger to human health; it must be dealt with in a different way from other types of waste.






20. When the size of an organism's natural habitat is reduced - or when development occurs that isolates a habitat.






21. When photochemical smog - NOx compounds - VOCs - and ozone combine to form smog with a brownish hue.






22. An underground layer of porous rock - sand - or other material that allows the movement of water between layers of nonporous rock or clay. Aquifers are frequently tapped for wells.






23. When an area of vegetation is cut down and burned before being planted with crops.






24. Soil composed of a mixture of sand - clay - silt - and organic matter.






25. The uppermost horizon of soil. It is primarily made up of organic material - including waste from organisms - the bodies of decomposing organisms - and live organisms.






26. Organisms that reproduce later in life - produce fewer offspring - and devote significant time and energy to the nurturing of their offspring.






27. When a species occupies a smaller niche than it would in the absence of competition.






28. In tectonic plates - the site at which an oceanic plate is sliding under a continental plate.






29. Any weathering that's caused by the activities of living organisms.






30. To convert or change into a vapor.






31. A complex of interrelated food chains in an ecological community.






32. A tank filled with aerobic bacteria that's used to treat sewage.






33. A succession of organisms in an ecological community that constitutes a continuation of food energy from one organism to another as each consumes a lower member and - in turn - is preyed upon by a higher member.






34. The degree to which a substance is biologically harmful.






35. The random fluctuations in the frequency of the appearance of a gene in a small isolated population - presumably owing to chance - rather than natural selection.






36. A species whose very presence contributes to an ecosystem's diversity and whose extinction would consequently lead to the extinction of other forms of life.






37. A layer of soil.






38. The maximum population size that can be supported by the available resources in a region.






39. A soil horizon - horizon C is made up of larger pieces of rock that have not undergone much weathering.






40. A process in which rows of crops are plowed across the hillside; this prevents the erosion that can occur when rows are cut up and down on a slope. ...






41. Being extinct or the process of becoming extinct.






42. An effect that results from long -term exposure to low levels of toxin.






43. The phenomenon whereby the Earth's atmosphere traps solar radiation - caused by the presence in the atmosphere of gases such as carbon dioxide - water vapor - and methane that allow incoming sunlight to pass through - but absorb heat radiated back fr






44. The amount of sugar that the plants produce in photosynthesis and subtracting from it the amount of energy the plants need for growth maintenance - repair - and reproduction.






45. The total sum of a species' use of the biotic and abiotic resources in its environment.






46. The atmospheric pressure conditions corresponding to the periodic warming of El Nino and cooling of La Nina.






47. Open or forested areas built at the outer edge of a city.






48. Pollution that does not have a specific point of release - open -loop recycling -when materials are reused to form new products.






49. The biological treatment of wastewater in order to continue to remove biodegradable waste.






50. A fiscal policy that lowers taxes on income - including wages and profit - and raises taxes on consumption - particularly the unsustainable consumption of non-renewable resources.






Can you answer 50 questions in 15 minutes?



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