Natural Science Exam 2 UPDATED
Questions and CORRECT Answers
water abundance - CORRECT ANSWER - Water may seem abundant, but drinkable water
is rare
Freshwater - CORRECT ANSWER - water that contains very low levels of dissolved salts,
only 2.5% of earths water is fresh
Where is most of the freshwater located? - CORRECT ANSWER - glaciers and ice caps or
underground
Watershed - CORRECT ANSWER - A dynamic system that includes the land area which
drains water to a particular stream
What shapes the landscape? - CORRECT ANSWER - Rivers
Tributary - CORRECT ANSWER - A stream or river that flows into a larger river
Confluence - CORRECT ANSWER - a meeting or gathering together with 2 streams
watershed definition - CORRECT ANSWER - Area of land drained by a river and its
tributaries
Floodplain - CORRECT ANSWER - Generally fertile areas that a river floods periodically
Riparian - CORRECT ANSWER - riverside areas that are productive and species-rich
NOAA - CORRECT ANSWER - National Oceanic and Atmospheric Administration
, 100 year flood - CORRECT ANSWER - has a 1% probability of occurring during any year
Oligotrophic - CORRECT ANSWER - lakes and ponds have low-nutrient and high-
oxygen conditions
Eutrophic - CORRECT ANSWER - lakes and ponds have high nutrient and low oxygen
conditions
Succession - CORRECT ANSWER - Eventually water bodies fill complete
The Ogallala Auquafer - CORRECT ANSWER - Worlds largest, underlies the Great Plains
of the US, Its water has allowed farmers to create the most bountiful grain producing region in
the world
Dams - CORRECT ANSWER - Usually have a primary purpose.
What happens to the ecosystem when a Dam is built - CORRECT ANSWER - The
ecosystem completely changes (stream to lake)
China's Three Gorges Dam info - CORRECT ANSWER - * worlds largest hydroelectric
facility
* used for electricity, shipping, and flood control
* Cost $25 billion to build
* Changed ecosystem
* Flooded cities and homes around it
* submerged archeological sites
* Drowning farmland and wildlife habitat
Questions and CORRECT Answers
water abundance - CORRECT ANSWER - Water may seem abundant, but drinkable water
is rare
Freshwater - CORRECT ANSWER - water that contains very low levels of dissolved salts,
only 2.5% of earths water is fresh
Where is most of the freshwater located? - CORRECT ANSWER - glaciers and ice caps or
underground
Watershed - CORRECT ANSWER - A dynamic system that includes the land area which
drains water to a particular stream
What shapes the landscape? - CORRECT ANSWER - Rivers
Tributary - CORRECT ANSWER - A stream or river that flows into a larger river
Confluence - CORRECT ANSWER - a meeting or gathering together with 2 streams
watershed definition - CORRECT ANSWER - Area of land drained by a river and its
tributaries
Floodplain - CORRECT ANSWER - Generally fertile areas that a river floods periodically
Riparian - CORRECT ANSWER - riverside areas that are productive and species-rich
NOAA - CORRECT ANSWER - National Oceanic and Atmospheric Administration
, 100 year flood - CORRECT ANSWER - has a 1% probability of occurring during any year
Oligotrophic - CORRECT ANSWER - lakes and ponds have low-nutrient and high-
oxygen conditions
Eutrophic - CORRECT ANSWER - lakes and ponds have high nutrient and low oxygen
conditions
Succession - CORRECT ANSWER - Eventually water bodies fill complete
The Ogallala Auquafer - CORRECT ANSWER - Worlds largest, underlies the Great Plains
of the US, Its water has allowed farmers to create the most bountiful grain producing region in
the world
Dams - CORRECT ANSWER - Usually have a primary purpose.
What happens to the ecosystem when a Dam is built - CORRECT ANSWER - The
ecosystem completely changes (stream to lake)
China's Three Gorges Dam info - CORRECT ANSWER - * worlds largest hydroelectric
facility
* used for electricity, shipping, and flood control
* Cost $25 billion to build
* Changed ecosystem
* Flooded cities and homes around it
* submerged archeological sites
* Drowning farmland and wildlife habitat
