Environmental Science Test

List the four common types of water pollution

1.) nutrient pollution 2.) surface water pollution 3.) Oxygen depleting pollution 4.) groundwater pollution

Which 2 of the following represent the most common uses of water here in the United States?

Agriculture & Household use - cooking, toilets, showers

Name 2 of the sources of drinking water for the Detroit water system.

Detroit river and lake huron

Wetlands function very much like a:

Drinking water treatment plant

Which of the following plant tissues are we "tapping" into in order to collect the maple sap?

Epidermal

Of the following, which is the best example of a point-source of water pollution?

Factory wastewater discharge

Dead zones form as a result of :

High levels of nutrients collecting in the body of water.

In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river. This effect is due to :

Increasing bacterial activity as organic matter decays

Waste from which of the following is an example of nonpoint source pollution?

Runoff from agricultural fields

The first step in both drinking water treatment and wastewater treatment is

Screening/filtering out large substances

The first step in both drinking water treatment and wastewater treatment is:

Screening/filtering out large substances

Choose the 3 common sources of drinking water for municipal/city water supplies.

Surface water such as lakes and rivers, Groundwater / underground aquifers, Desalination of sea water

In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river. This effect is due to:

The ability of warmer water to dissolve heavy metals.

Which of the following is a point source of water pollution?

The green ooze from chrome plating plant in Madison Heights

What is the primary reason that so much of the water is polluted? Why do governments not take steps to fix these situations?

The main reason for a massive increase in water pollutants can be caused due to a massive amount of waste being added to the water system. This can include both industrial waste, trash, and human feces. Government tend not to try an fix the problem because it is expensive.

It is estimated that about 1 billion people world-wide do not have access to clean drinking water.

True

The sugar that is in the maple sap / maple syrup was produced by, photosynthesis last summer

True

Which of the following is NOT a common method for disinfecting drinking water?

UV light

Which of the following is a non-point source of water pollution?

a logged forest

Throughout the world, the most water is used for

agriculture

The Gulf of Mexico's "Dead Zone" is caused by high levels of ________ in the Mississippi River

algae

What is by far the leading cause of water pollution?

factories/industrial

Bacteria need to be added during the treatment of wastewater in order to decompose organic wastes such as feces and food wastes.

false

Which of the following is not a common source of drinking water?

glaciers

Water in the spaces between soil, rock, and gravel is called what

groundwater

In the sewage treatment process, the purpose of chlorination involves ____.

killing bacteria and other pathogens

Which of the following is an effective alternative to chlorine for disinfecting wastewater in a municipal treatment plant?

phosphates

Wetlands such as swamps and tidal flats are valuable for

recharging groundwater supplies. animal habitat chemical cycling of carbon, nitrogen, and sulfur. their ability to absorb chemicals and heavy metals.

One method of desalination uses high pressure to force saltwater through a membrane filter. This method is called

reverse osmosis

A body of water can be depleted of its oxygen by ____.

sediments and suspended matter

The algal blooms found in Lake Erie are primarily caused by :

untreated sewage from cities.

Oxygen sag curves occur when

bacteria break down biodegradable wastes

One class of pollutants that can cause excessive growth of algae is

oxygen-demanding wastes.