Water on Earth
Where is most of the freshwater found on Earth?
Ice caps, glaciers, frozen
Where does all water on earth eventually flow?
oceans
What causes upwelling in the oceans?
winds and ocean currents
What are bio-indicators?
Organisms that are sensitive to its environment and can be used to determine the quality or how safe the water is.
In the United States, which is responsible for ensuring the safety of the country’s drinking water?
Environmental Protection Agency (EPA)
Where is most of the fresh surface water located on Earth?
groundwater
What does saturation means?
The act of completely soaking something until it's absorbed as much water as it can
What is an estuary?
wetland where salt water and fresh water meets.
Describe the water quality that has high turbidity.
Water is murky/cloudy/dirty - hard to see through
Which substance is used in a sewage treatment system to kill harmful bacteria?
Chlorine
Which best describes the importance of an aquifer?
It holds uncontaminated ground water for human consumption.
Which property allows water to stick to other substances?
Adhesion
What is the source of oxygen in ocean water?
1.plants release oxygen (photosynthesis)
2. air trapped by waves
Which water quality data most likely indicates eutrophication?
Nutrients
Why is filtration an important part of water treatment?
Filtration removes small particles from the water.
Why freshwater is in such short supply?
Most of the freshwater is frozen in ice sheets.
As temperature decrease, the amount of dissolved oxygen in the water will _______________.
Increase
What happens to nutrients in the ocean as a result of upwelling?
Nutrients rise to the surface waters
What will most likely happen to a biological indicator species if there is a sudden increase in pollution?
They will die and population will decrease
Why does a cloudy river produce less plant life than a clear river?
A cloudy river blocks sunlight from reaching plants, while a clear river allows sunlight to be absorbed by plants.
Is the amount of water present on Earth today the same amount present millions of years ago?
It is the same amount
Which contributes most in supporting life on the deep ocean floor?
Hydrothermal vents
Deep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source?
Chemosynthesis
Why does fertilizer pollution stimulate the growth of algae in a pond?
Algae are producers and use the fertilizer’s nutrients to rapidly multiply.
List 2 ways to conserve water
Answer varies