Unit 3 Test Review #1

1. Unit 3 Test Review #1

2. Try to picture celery that has been sitting in blue colored water for a couple days. The leaves on top of the stalk have turned blue. What water property allows this to occur? • Capillary action • Surface tension • Density • Specific heat 30

3. Which of the following statements is most TRUE about salt water. • It is less dense than fresh water • It is more dense than fresh water • It has the same density of fresh water • It has no density 30

4. Deep-ocean technology, like sonar and submersibles, have enabled scientists to learn more about • Surface plankton • Fish living in coral reefs • Hydrothermal vents • Intertidal zone 30

5. What is the #1 contributor to problems along a shoreline? • Animals overpopulating • Human activity • Lack of sunlight • Increased air temperatures 30

6. When it rains, a portion of the water seeps into the ground to replenish the Earth's _______________. • Unsaturated zone • Groundwater • Water table • Permeability 0

7. However, most of it flows downhill washing off streets, lawns, construction sites, and farms. This water is called _______________ and will unfortunately carry oil, gas, pesticides, chemicals, etc. to streams and rivers. • Groundwater • Point source pollution • Runoff • Toxic 0

8. If an ecologist is using a Secchi Disc to measure the clarity of the water, what is he measuring? • pH • Dissolved oxygen • turbidity • temperature 0

9. A paperclip is floating in a bowl on top of water. Which of the following properties of water helps keep the paperclip from sinking? • Surface tension • Solubility • Capillary action • Density 0

10. Sonar measures ocean depth by means of • Weighted lines • Light waves • Sound waves • Magnets 0

11. It was discovered that gasoline was leaking from one of Exxon’s underground storage tanks in a nearby area. Because the pollution could be identified as belonging to Exxon, it is called _______________pollution. • Point source • Non-point source • Run-off • Identifiable 0

12. If you took a sample of water from a stream and it had a lot of macroinvertebrates that are very sensitive to pollution, what might you imply? • The water is very healthy. • The water has some pollution. • The stream is heavily polluted. • There is not enough information to make an assessment. 30

13. Many fisheries are located in areas where water is full of nutrients from the deep because it has been moved to the surface naturally. What process moves water from the deep ocean to the surface? • Upwelling • Downwelling • El Niño • Riptides 30

14. One of the ocean’s natural resources that you do not eat but is extremely important in your survival due to the oxygen it produces is • Benthos • Nekton • Phytoplankton • Zooplankton 0

15. In order for organisms to survive in the deep ocean, they must have special features that allow them to capture food, attract a mate, or escape predation. Which of the following would be an adaptation for a deep sea organism? • Big eyes • Small mouths • Ability to glow in the dark • Tiny sharp teeth 0

16. What saltwater habitat is endangered due to pollution and fishing practices? • Mangrove forests • Salt marshes • Coral reefs • Kelp forests 0

17. _______________pollution is responsible for most water pollution because its source is hard to find, scattered or widespread. • Point source • Non-point source • Run-off • Identifiable 0

18. If benthos are crawlers, how could nekton be described? • Drifters • Motionless • Swimmers • Floaters 30

19. The highest point of an aquifer is called what? Wells have to be dug below this point to guarantee water. • Water table • Saturated zone • Permeable rock • Impermeable rock 0

20. Which unique property allows water to form droplets? • Adhesion • Cohesion • Capillary action • Solubility 0

21. respiration photosynthesis 20. Which cycle is demonstrated here? • Nitrogen cycle • Water cycle • Krebs cycle • O2—CO2 cycle 0

22. Nitrogen is critical to allorganisms because it allows them to build proteins which help them grow and function. Unfortunately the nitrogen in the atmosphere is useless to organisms. What statement best describes how organisms obtain the much needed nitrogen? • Plants make nitrogen compounds on their own and pass them to everything that eats it. • Bacteria fixes nitrogen from air/waste so it can be cycled through plants and animals. • Nitrogen compounds can only be converted by lightning. • None of the above. 0

23. Water is said to be sticky because of its unequal sharing of electrons or • Solubility • Conductivity • Negativity • Polarity 0

24. How are bioindicators used to assess the health of a stream? • Check living things for mutations • See what species are present • Population studies • All of the above 0

25. Where would you expect to find ocean organisms that are able to survive out of water and withstand drastic changes in salinity? • Intertidal zone • Coral reefs • Deep zone • Thermocline 0

26. What law is the most important legislation that protects water quality (especially with respect to point-source pollution)? • Resource Conservation and Recovery Act • Wildlife Preservation Act • National Water Quality Act • Clean Water Act 0

27. Which of the following is a true statement? • Air pollution raises the pH of a stream. • Acid rain lowers the pH of a stream. • Photosynthesis lowers the pH of a stream. • Decomposition raises the pH of a stream. 0

28. Water covers almost three-quarters of the Earth’s surface. What percentage of that water is salt water? • 3% • 50% • 71% • 97% 0

29. Just like many states across America, North Carolina has its fair share of challenges when it comes to fresh water. What are some issues North Carolina faces specifically? • Drought • Fertilizer runoff • Non-point source pollution • All of the above 0

30. Which unique property of water prevents the oceans from freezing over? • Adhesion • Cohesion • Capillary action • Specific heat 0

31. The land that water flows across or through on its way to a stream, river, or wetland is called a(n) _______________. They are named for the larger local body of water they drain into. • Estuary • Stream • Drainage Basin • Aquifer 30

32. Fresh water organisms that live in a lake or pond can survive throughout the winter because of water’s unique behavior with respect to _______________. A layer of ice will actually float on top of the water’s surface to insulate and protect all the organisms below it…keeping them safe and able to swim throughout the winter. • Salinity • Density • Specific Heat • Adhesion 30

33. About 1/5 of the people in the U.S. get their fresh water from _______________ (s) deep underground in a bed of sand or gravel a few meters thick. • Aquifer • Unsaturated layer • Water table • Springs 30

34. Water falling on a _______________ flows into the drainage basins on either side of it. It separates or distinguishes one drainage basin from the next. • Valley • Shift • Divide • Crater 30

35. _______________ rock prevents water from sinking further down in a groundwater system. • Saturated • Unsaturated • Permeable • Impermeable 30

36. The body of water where fresh and salt water mix together is called a(n) • Lake • River • Ocean • Estuary 30

37. Where is most of the fresh water on Earth? • Trapped in ice. • In our many lakes. • In the ocean’s. • Underground in aquifers. 30

38. Municipal (public) water sometimes comes from pumping water out of an aquifer. Where is the water held in the aquifer before it is pumped out? • In impermeable rock deep down • Underground rivers • In the water table • In saturated, permeable rock formations 30

39. Which is considered the universal solvent? • Water • Bleach • Oil • Soap 30

40. Estuaries are valuable resources for all of the following reasons EXCEPT: • Its grasses provide a habitat (home) to many organisms. • They act as a natural filter to pollutants from run-off so they don’t enter the ocean. • You can dump your trash and hazardous waste materials there without penalty/fines. 30

41. Which of the following is an example of a biotic factor: • The sun • Water • Grass • Oxygen 30

42. What would most likely be a limiting factor in a rabbit population? • An increase in its predator population • An increase in grass population • A decrease in available sunlight • An increase in available water 30

43. Which of the following is true about the flow of energy in an ecosystem? • Green plants are the only organisms than can produce their own energy. • A very small amount of energy is passed from one organism to the next. • Consumers pass on energy to producers, which pass it to decomposers. • Decomposers get their energy directly from sunlight. 30

44. In which organelle does cellular respiration take place? • mitochondria • nucleus • chloroplast • ribosomes 30

45. What life process takes place in the chloroplasts of producers? • digestion • excretion • cellular respiration • photosynthesis 30

46. In the Chesapeake Bay, the oyster population has declined to less than 1% of its original number. Since then, the water has become heavily polluted and many ecosystems have declined as a result. What can you infer is the oyster’s niche? • Oysters act as a giant filter, so when their population declines, they can’t “clean” the water. • Oysters are the basis of the food chain…providing energy to every level of consumer. • Oysters are responsible for removal of salt from the water and preventing excess salinity in the bay. 30

47. In the Chesapeake Bay, the oyster population has declined to less than 1% of its original number. Since then, the water has become heavily polluted and many ecosystems have declined as a result. What can you infer is the oyster’s niche? • Oysters act as a giant filter, so when their population declines, they can’t “clean” the water. • Oysters are the basis of the food chain…providing energy to every level of consumer. • Oysters are responsible for removal of salt from the water and preventing excess salinity in the bay. 30

48. Which of the following correctly identifies a food chain from the picture? • Heronfishalgae • Diatomszooplankton frogsnake • Bacteriasnailfish heron • Grassduckfrog 30

49. Which of the following correctly identifies an interconnection between a terrestrial and aquatic food web? • Algaesnailfish • Diatomszooplankton fish • GrasshopperBird • Grassgrasshopper duck 30