Science Benchmark 2 Review

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Benchmark Review - Science

Benchmark Review - Science

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  • 1. Science: Benchmark #2 Review Water and Watersheds SOL 6.1, 6.5 a-c, e-f
  • 2. Water is known as a “universal solvent” because -
    • It dissolves in many other substances
    • It can dissolve lots of other substances
    • It is found on every planet
    • It only exists as a liquid
  • 3. B) It can dissolve lots of other substances
  • 4. The property of water that helps its molecules stick together is -
    • F) The sides of the molecule are positive.
    • G) The sides of the molecule are negative.
    • H) One side of the molecule is negative and the other is positive.
    • J) Both sides are magnetic.
  • 5. H) One side of the molecule is negative and the other is positive.
  • 6. Which description best describes the ability of the water molecule to show cohesion and adhesion?
    • The negatively charged oxygen end of the molecule is attracted to the positively charged hydrogen end of the molecule.
    • The negatively charged hydrogen end of the molecule is attracted to the positively charged oxygen end of the molecule.
    • The overall charge of the water molecule is positive, causing a positive attraction for all water molecules.
    • The overall charge of the water molecule is negative, causing a negative attraction for all water molecules.
  • 7. A) The negatively charged oxygen end of the molecule is attracted to the positively charged hydrogen end of the molecule.
  • 8. Which state of water is composed of molecules that are locked together?
    • Liquid
    • Solid
    • Gas
    • Gel
  • 9. G) Solid
  • 10. The state of water that has molecules that move freely past each other is -
    • Liquid
    • Solid
    • Gas
    • Gel
  • 11. C) Gas
  • 12. Ice will float in water because -
    • F) Ice is more dense than liquid water
    • G) Ice is less dense than water
    • H) Water pushes the ice to the surface
    • J) The salt in the water makes the ice float
  • 13. G) Ice is less dense than liquid water
  • 14. When the acids in water dissolve away a rock, ____________ has occurred.
    • Pollution
    • Physical weathering
    • Chemical weathering
    • Acid rain
  • 15. C) Chemical Weathering
  • 16. When water freezes in the cracks of rocks and then small pieces of the rock break off, __________ has occurred.
    • F) Pollution
    • G) Physical Weathering
    • H) Chemical Weathering
    • J) Acid Rain
  • 17. G) Physical Weathering
  • 18. All of the following are ways to conserve water except -
    • Watering the yard in the summer
    • Correcting a dripping faucet
    • Taking shorter showers
    • Watering the yard and garden with rainwater
  • 19. A) Watering the yard in the summer
  • 20. We need to preserve and maintain our water resources. Which of the following is NOT an important reason to do this?
    • F) Water is used to grow food.
    • G) Water is important to our health.
    • H) Water is an important source in recreation.
    • J) Water is needed by our bodies.
  • 21. H) Water is an important source of recreation.
  • 22. Where is most of the water on Earth found?
    • The polar icecaps
    • The oceans
    • Underground aquifers
    • Lakes, ponds, rivers, and streams
  • 23. B) The oceans
  • 24. Where is most of the fresh water on the Earth found?
    • F) Polar icecaps
    • G) Oceans
    • H) Underground aquifers
    • J) lakes, ponds, rivers, and streams
  • 25. F) Polar icecaps
  • 26. When agriculture and human waste is added to watersheds decomposition occurs. What does the decomposition process use up in the water?
    • Nitrogen
    • Hydrogen
    • Oxygen
    • Phosphorus
  • 27. C) Oxygen
  • 28. What abiotic factors are important in an aquatic ecosystem?
    • F) amphibians, vegetation, nutrients, nektons
    • G) grasses, trees, reptiles, amphibians
    • H) nektons, rocks, grasses, climate
    • J) Dissolved oxygen, salt, water temperature, chemical contaminants
  • 29. J) Dissolved oxygen, salt, water temperature, chemical contaminants
  • 30. Into what major body of water do the rivers of Tidewater empty?
    • Atlantic Ocean
    • Potomac River
    • Hampton Roads
    • Chesapeake Bay
  • 31. D) Chesapeake Bay
  • 32. Most of Virginia’s largest rivers flow -
    • F) Southeast
    • G) Northwest
    • H) Southwest
    • J) North
  • 33. H) Southwest
  • 34. The water from Virginia’s rivers and streams ultimately ends up in the -
    • Arctic Ocean
    • Atlantic Ocean
    • Gulf of Mexico
    • Pacific Ocean
  • 35. B) Atlantic Ocean
  • 36. A “divide” as it relates to water systems is -
    • F) An imaginary line that separates two water systems
    • G) The place where rapids and waterfalls are found
    • H) A line that divides fresh water from salty water
    • J) A line that divides flowing water in half
  • 37. F) An imaginary line that separates two water systems
  • 38. Wetlands are extremely important for-
    • Picnic areas
    • Water storage
    • Deep sea fishing
    • Water recreation
  • 39. B) Water storage
  • 40. An estuary is a -
    • F) Freshwater wetland
    • G) Place where freshwater meets saltwater
    • H) Saltwater wetland
    • J)Freshwater pond
  • 41. G) Place where freshwater meets saltwater
  • 42. Estuaries are important to healthy watersheds because -
    • They provide access to the open sea
    • They serve as spawning and nursery areas for lots of wildlife
    • They reduce surge from ocean storms
    • They are pretty to look at
  • 43. B) They serve as spawning and nursery areas for lots of wildlife
  • 44. The Chesapeake Bay is an example of a/an -
    • F) Ocean
    • G) Estuary
    • H) River
    • J) Lake
  • 45. G) Estuary
  • 46. The greatest source of water pollution is -
    • Agriculture
    • Fishing industry
    • Water sports
    • Aquatic organisms
  • 47. A) Agriculture
  • 48. When monitoring the water quality of a stream, which measure would be LEAST helpful?
    • F) Flow
    • G) pH
    • H) Temperature
    • J) Salinity
  • 49. A) Flow
  • 50. To help control the nutrient pollution of the Chesapeake Bay watershed, which of the following is a practical solution?
    • Keep farmers from using fertilizer in watershed areas
    • Set limits on how much fertilizer can be used
    • Ban the use of all fertilizer
    • Use time-released fertilizers in watershed areas
  • 51. B) Set limits on how much fertilizer can be used
  • 52. Recycling is often resisted by industry because -
    • F) It is very expensive
    • G) It requires too much energy
    • H) It is not important
    • J) It is a hazard to the workplace
  • 53. F) It is very expensive
  • 54. The process in which water vapor, a gas, turns into a liquid is called -
    • Sublimation
    • Condensation
    • Evaporation
    • Degasification
  • 55. B) Condensation
  • 56. Which of the following, when added to water in large amounts cause water pollution?
    • I oxygen
    • II fertilizer A) I, III, V
    • III snow B) I, II, V, VI
    • IV hot water C) II, IV, V
    • V bacteria D) III, V, VI
    • VI sand
  • 57. C) fertilizer, hot water, bacteria
  • 58. During the process of evaporation, liquid water becomes -
    • Tiny drops of water
    • Separate atoms of water
    • Molecules of water vapor
    • Atoms of hydrogen and oxygen
  • 59. C) Molecule of water vapor
  • 60. Which of these will cause water to change to ice?
    • Removing heat from water
    • Stirring the water
    • Adding salt to the water
    • Putting the water in the sunlight
  • 61. A) Removing heat from the water
  • 62. Water is often found as a liquid, but it has two other states. Which variable affects the state of water?
    • Temperature
    • Density
    • Charge
    • Volume
  • 63. A) Temperature