1) Why is 97% of Earth's water considered non-potable? a) It is too cold b) It is too salty c) It is trapped in ice d) It is underground 2) Which factor determines how much gas can dissolve in ocean water? a) the motion of the air above the ocean water. b) the temperature of the air above the ocean water. c) the motion of the ocean water currents. d) the temperature of the ocean water. 3) What causes increased algae growth in a body of water? a) runoff of topsoil b) runoff of gasoline c) runoff of dog poop d) runoff of nitrates 4) Why are phytoplankton so important to the global environment? a) Phytoplankton decrease carbon dioxide in the atmosphere b) Phytoplankton decrease oxygen in the atmosphere c) Phytoplankton release carbon dioxide into the atmosphere d) Phytoplankton decrease oxygen in the ocean water 5) How do we reach potable water from an aquifer? a) drilling a well below the water table b) pumping water into a river basin c) digging into unsaturated flood zones d) extracting large amounts of minerals 6) What will happen if dissolved oxygen levels decrease in a body of water? a) Life will grow in population size b) Life will decrease in population size c) Water temperature will decrease d) Water levels will begin to rise 7) How much total freshwater do we have available for consumption? a) 71% b) 3% c) 2% d) 0.5% 8) Which process would increase availability of freshwater? a) sedimentation b) evaporation c) desalination d) condensation 9) Where do deep sea organisms get there energy? a) Chemicals and heat from hydrothermal vents b) Nuclear energy released from the ocean floor c) Bottom feeding fish release energy as a byproduct of respiration d) There is no life in the deep sea 10) How does increased turbidity impact temperatures of water? a) temperatures increase b) temperatures decrease c) temperatures first increase, then decrease. d) temperatures are not impacted by turbidity. 11) The Clean Water Act helps to a) prevent water pollution b) prevent flooding c) provide cures for waterborne illnesses d) prevent the extinction of fish and water plants 12) How does drought impact salinity of a body of water? a) It increases water level, decreasing salinity b) It decreases water level, increasing salinity c) It increases water level, increasing salinity d) It decreases water level, decreasing salinity 13) Which is the most acidic pH level? a) 7.2 b) 7.1 c) 6.9 d) 6.8 14) How does excess coliform enter into our water supply? a) Runoff of animal waste b) leaky septic tanks c) over-fertilization by farmers d) excess pollution from factories 15) Which is an example of a non-point source pollution a) direct discharge from a factory b) waste from a sewage treatment plant c) runoff from a hog farm d) drainage pipes 16) What is floc? a) floc is another way to tell someone off. b) floc is a large group of birds c) floc is a clump of waste particles d) floc is a disinfectant 17) What is used to clean water of harmful microorganisms? a) Chlorine b) Fluorine c) Uranium d) Oxygen 18) What is eutrophication? a) Increase in algae due to excess fertilizers in the water b) decrease in algae due to excess fertilizers in the water c) Excess oils and chemical pollutants decreasing quality of water d) death of all the plants in the water 19) How do we monitor algae growth worldwide? a) Random water sampling b) Submarines c) Satellites d) Hot air balloons 20) Why is upwelling beneficial? a) It provides a hiding place for small fish and organisms b) It provides nutrition for life at the ocean surface c) It maintains a balance of pH and density in the ocean d) It helps predators find their prey

Hydrosphere Review Open the Box

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?