Pollution & Stewardship
Pollution that can be easily identified and traced back to a source
Point Source Pollution
Where would most of the freshwater available on Earth be located?
Ice Caps and Glaciers
Plankton are free-floating aquatic organisms that form the base of the ocean food web. Which ocean zone will have the maximum concentration of plankton?
Intertidal or shallow zones of the ocean
Runoff can increase the level of suspended sediment in water. This is gives a cloudy look to the water and can make it undrinkable if too dirty. This is called...
Turbidity
Where is the majority of water located on Earth?
Oceans (97%)
Pollution that cannot be easily identified because it comes from many different places
Nonpoint Source
Explain the relationship between watersheds and river basins
Watershed collect and drain water into a river basin
What will most likely happen if there is increased upwelling in a coastal area?
More aquatic life
An organism whose presence in a body of water is an indication of the health of the water
Bioindicator (macro-invertebrate)
How is groundwater formed in the water cycle?
Water during runoff seeps into permeable soil and accumulates
A law that works to correct toxic effluents (chemicals) from industries. Mostly corrects point source pollution
Clean Water Act (1972)
Why is water from an aquifer more likely to be cleaner than water from a lake or river?
Water in an aquifer gets filtered by porous rock and permeable layers as it makes its way into the aquifer.
The amounts of dissolved gases play important roles in marine environments. Which factors affect the amounts of dissolved gases in ocean water?
1. temperature and salinity only
2. temperature and pressure only
3. temperature, pressure, and salinity
4. temperature, pressure, salinity, and pH
3. temperature, pressure, and salinity
Explain the relationship between temperature and dissolved oxygen.
higher temperatures = lower D.O
lower temperatures = higher D.O
What effect does precipitation have on the water table?
It causes the water table to rise
Federal agency responsible for making sure that the public water supply within the United States is safe.
Environmental Protection Agency (EPA)
How do nutrients, sediment and pollutants get into estuaries and oceans?
From rivers and streams flowing into estuaries and oceans
Which holds more gas?
Cold water, more saline, low pressure
Cold water, less saline, high pressure
Warm water, more saline, low pressure
Warm water, less saline, high pressure
2. Cold water, less saline, high pressure
Which will occur if humans continue to overload water systems with excess nutrients?
Eutrophication
Which factor would increase the salinity of oceans?
1. heavy precipitation over ocean waterheavy precipitation over ocean water
2. increased evaporation of ocean water increased evaporation of ocean water
3. increased runoff at coastlines increased runoff at coastlines
4. melting of ice sheets at the poles
2. increased evaporation of ocean water increased evaporation of ocean water
What are the 4 steps of the water treatment process?
Coagulation
Sedimentation
Filtration
Disinfection
In North Carolina, the water in an estuary is shallow, which helps sunlight penetrate to the bottom. How is this beneficial?
It promotes the growth of plants which will increase aquatic life
How do organisms in the deep ocean survive?
Hydrothermal Vents & Chemosynthesis
Which of the indicators is concerning? Explain your choice.
A clear sample of water has a pH of 6, a temperature of 68 degrees fahrenheit, and a variety of living organisms.
pH of water should ideally be 7 but can be anywhere between 6.5-8.5
Precipitation that does not permeate the ground runs off the surface quickly. It forms small streams that widen and become longer. Where does the water from these streams drain?
Rivers