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Env Sci Ch 11 Test
| Question | Answer |
|---|---|
| Which is a true statement about fresh water? a. Most large cities use surface water as a water source. b. most abundant type of water on Earth. c. Stagnant water makes natural lakes poor water sources. d. 3 percent of all water found on Earth. | 3% |
| Most of Earth’s fresh water is found where? | polar ice caps and glaciers |
| Examples of Earth’s surface water include: | fresh water (rivers, lakes), salt water (oceans), ice, and snow, that are found above the ground. |
| How is fresh water used for industrial purposes? | Water is used to manufacture goods, to dispose of wastes, and to generate power. Cools power plants |
| What has made many areas of the world without adequate fresh water become habitable? | water management programs, such as dams |
| Which is one way a person could conserve water? a. Take a long bath instead of a shower b. Wash laundry in small, partial loads c. Use a low-flow showerhead and take short showers d. Water your lawn daily and at mid-day | Use a low-flow showerhead and take short showers |
| Which represents nonpoint-source pollution? a. An unlined landfill b. Polluted wastewater from a chemical plant c. A leaking oil tanker d. Runoff from agricultural feedlots | runoff from agricultural feedlots |
| Parasitic worms would be classified as which type of water pollutant? a. Pathogen b. Organic matter c. Inorganic chemicals d. Heavy metals | pathogens |
| Why is polluted groundwater difficult to clean? | Pollution can cling to the rock and soil that make up an aquifer, so even if all of the water in aquifer were pumped out and replaced with clean water, the groundwater could still become polluted. |
| Where do most of the pollutants in the ocean come from? | activities on land |
| What is the largest watershed in the United States? | Mississippi |
| When neighborhood residents noticed a large number of dead fish in a local creek, they traced the problem to a nearby gas station. It turned out that a tank of gasoline had developed a leak. What is this scenario an example of? | point source pollution |
| Most large cities get water for households and industries from where? | lakes and rivers |
| What is an inexpensive solution to providing everyone with more fresh water to use? a. Desalination b. Drilling more wells into aquifers c. Water conservation d. Building more dams | water conservation |
| Some communities have banned detergents containing high levels of phosphates because? | they may cause fish to suffocate and die |
| Where does the water that we use here in this community come from? | ??? water treatment plants??? rivers/lakes???? |
| An effective approach to preventing future shortages of usable water should focus on? | conservation |
| Explain how the dead zone in the Gulf of Mexico off the coast of La is an example of artificial eutrophication. What sort of nutrients are responsible? Where do they come from? Describe what is happening in the water. Why is it called a “dead zone?” | Artificial eutrophication is caused by humans. The area of the coast of La is a dead zone for fish/sea life because of nitrogen/phosphorous from fertilizers and plants are running off and choking the oxygen out of the water. |
| ____________________________ is a process that includes filtration and chlorination. | water purification |
| A large area of land that is drained by a river is known as an ________________________. | watershed |
| An artificial lake created by building a dam is called a _______________________________. | reservoir |
| A(n) _________________________ is an underground rock formation that holds water. | aquifier |
| The ______________________________is the continuous movement of water between Earth and its atmosphere. | water cycle |
| Water pollution that washes into storm sewers from many places, such as parking lots and lawns is called ___________________________________________. | nonpoint source pollution |
| The accelerated build-up of nutrients in water caused by humans, while oxygen levels decrease, is a process known as _________________________________________. | artificial eutrophication |
| Water that is ___________________ is safe to drink. | potable |
| The process of removing salt from salt water to make fresh water is _________________________. | desalinization |
| A hole that is dug or drilled to reach groundwater is called an ____________________________. | well |
| The area of land through which water percolates and is stored as groundwater is a ________________________. | recharge zone |
| ____________________________ is the process by which increasing amounts of toxins are stored in the bodies of organisms as toxins move up the food chain. | bioaccumulation |
| A bacterium, virus, or parasitic worm found in water that causes disease is a ________________________. | pathogen |
| A method of providing plants with water from sources other than precipitation is known as ____________________________. | irrigation |
| The introduction of chemical, physical, or biological agents into water that degrade the water quality is known as ___________________________. | pollution |
| ______% of Earth's water is saltwater | 97 |
| ____% of Earth's water is fresh water | 3 |
| _____% of freshwater is groundwater. | 22 |
| ____% of freshwater is stored in icecaps and glaciers | 77 |
Created by:
aaswell