Test your basic knowledge |

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. Any substance that has an LD50 - of 50 mg or less per kg of body weight.






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






3. Any process that breaks rock down into smaller pieces without changing the chemistry of the rock; typically wind and water.






4. The cultivation of a single crop on a farm or in a region or country; a single - homogeneous culture without diversity or dissension.






5. A soil horizon; B receives the minerals and organic materials that are leached out of the A horizon.






6. The part of the wide lower course of a river where its current is met by the tides.






7. The liquid that percolates to the bottom of a landfill.






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






9. Land that's fit to be cultivated.






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






11. The number of children an average woman will bear during her lifetime; this information is based on an analysis of data from preceding years in the population in question.






12. The development and introduction of new varieties of (mainly) wheat and rice that has increased yields per acre dramatically in countries since the 1960s.






13. The more or less constant winds blowing in horizontal directions over the Earth's surface - as part of Hadley cells.






14. In fishing - the use of long lines that have baited hooks and will be taken by numerous aquatic organisms.






15. A specific location from which pollution is released; an example of a point source location is a factory where wood is being burned.






16. The number of individuals of a population that inhabit a certain unit of land or water area.






17. 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.






18. The number of live births per 1 -000 members of the population in a year.






19. When ecological succession begins in a virtually lifeless area - such as the area behind a moving glacier.






20. A lowland area - such as a marsh or swamp - that is saturated with moisture - especially when regarded as the natural habitat of wildlife.






21. The process by which specialized bacteria (mostly anaerobic bacteria) convert ammonia to NOy NO2 - and N2 and release it back to the atmosphere.






22. The low-rainfall region that exists on the leeward (downwind) side of a mountain range. This rain shadow is the result of the mountain range's causing precipitation on the windward side.






23. Biotic and abiotic natural ecosystems.






24. The process that occurs when two different species in a region compete and the better adapted species wins.






25. An organism that obtains organic food molecules without eating other organisms or substances derived from other organisms. autotrophs use energy from the sun or from the oxidation of inorganic substances to make organic molecules from inorganic ones.






26. A bloom of dinoflagellates that causes reddish discoloration of coastal ocean waters. Certain dinoflagellates of the genus Gonyamfox produce toxins that kill fish and contaminate shellfish.






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






28. The third purest form of coal.






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






30. Any compound that releases hydrogen ions when dissolved in water. Also - a water solution that contains a surplus of hydrogen ions.






31. The A layer of soil is often referred to as topsoil and is most important for plant growth.






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






33. 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.






34. Pollutants that are released directly into the lower atmosphere.






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






36. A stable - mature community in a successive series that has reached equilibrium after having evolved through stages and adapted to its environment.






37. Soil with particles 0.002 -0.05 mm in diameter.






38. A long - relatively narrow island running parallel to the mainland-built up by the action of waves and currents and serving to protect the coast from erosion by surf and tidal surges.






39. A group of modern windmills.






40. The accumulation of a substance - such as a toxic chemical - in various tissues of a living organism.






41. The process of fusing two nuclei.






42. Is the practice of planting bands of different crops across a hillside.






43. Bacteria or fungi that absorb nutrients from nonliving organic matter like plant material - the wastes of living organisms - and corpses. They convert these materials into inorganic forms.






44. A region of the ocean near the equator - characterized by calms - light winds - or squalls.






45. The practice of alternating the crops grown on a piece of land - for example - corn one year - legumes for two years - and then back to corn.






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






47. Change in the genetic composition of a population during successive generations as a result of natural selection acting on the genetic variation among individuals and resulting in the development of new species.






48. The right - as to fishing or to the use of a riverbed - of one who owns riparian land (the land adjacent to a river or stream).






49. The structure obtained if we organize the amount of energy contained in producers and consumers in an ecosystem by kilocalories per square meter - from largest to smallest.






50. The management of forest plantations for the purpose of harvesting timber.