NR 504 Water
Water Cycle - answerThe continuous process by which water moves from Earth's
surface to the atmosphere and back
Parts of the water cycle - answer evaporation, transpiration, runoff, condensation,
precipitation, infiltration
Why manage water resources? - answer- only 2.5% of earths water is "fresh"
-7% of freshwater is frozen
-Only a fraction is available and demand is increasing
-current human pop is 7.5 billion
-2050 the pop will be 9.7 billion
-1.2 billion people rely on contaminated water
Where do we get our water locally? - answer source- a combo of surface water from the
oyster and lamprey rivers and ground water
use- UNH and Durham community
disposal- after treatment in the tidal portion of the oyster river
How much water do you use each day? - answer80-100 gallons
Course Objectives - answer-The special properties of water
-How water moves through the landscape
-How humans use, regulate and alter water quantity
and quality
-Current issues - threats and solutions to water
management
-Practice water resource assessment methods
•Attitude -Your relationship with water:
-The way you think about water
-The way you use water
-Articles you share will demonstrate the importance of
water resources and their management
What are the 3 Core Areas of this course? - answerHydrology
Water Quality
Water Policy
Hydrology - answerHydrology: The Water Cycle
How does water move through the
landscape?
, -urbanization of streams, taming nature(dams), flooding??
water quality - answerWater Quality - "Is the water
safe?"
water management - answer"How are water quality and
quantity regulated?"
dipole structure - answerunequal sharing of electrons. Also called
a polar molecule
atom - answerProton: Determines what an element is; has mass, positive charge
Neutron: has mass; neutral charge
Electron: determines "behavior" of element; negligible mass; negative charge;
Hydrogen bonding - answerthe intermolecular force in which a hydrogen atom that is
bonded to a highly electronegative atom is attracted to an unshared pair of electrons of
an electronegative atom in a nearby molecule
ionic bond - answerone atom donates its electron to another atom
covalent bond - answerelectrons are shared equally between atoms
Physical structure of water - answerPhysical structure (H2O) is an isosceles
triangle
Ion - answerA charged atom
Molecule - answerA group of atoms bonded together
Electrical Structure - answerUnequal sharing of electrons
Oxygen has locally negative charge
Hydrogen has locally positive charge
Results in water being a
polar compound
Polar compound
- unequal charge
distribution
Leads to hydrogen bonding
What are the unique properties of water? - answerALL DUE TO HYDROGEN BOND
Polar nature (not unique to water) leads to very
strong H Bonding and . . .
Adhesion, Cohesion, Capillarity and High surface
tension
Exists in all 3 phases on earth's surface
Water Cycle - answerThe continuous process by which water moves from Earth's
surface to the atmosphere and back
Parts of the water cycle - answer evaporation, transpiration, runoff, condensation,
precipitation, infiltration
Why manage water resources? - answer- only 2.5% of earths water is "fresh"
-7% of freshwater is frozen
-Only a fraction is available and demand is increasing
-current human pop is 7.5 billion
-2050 the pop will be 9.7 billion
-1.2 billion people rely on contaminated water
Where do we get our water locally? - answer source- a combo of surface water from the
oyster and lamprey rivers and ground water
use- UNH and Durham community
disposal- after treatment in the tidal portion of the oyster river
How much water do you use each day? - answer80-100 gallons
Course Objectives - answer-The special properties of water
-How water moves through the landscape
-How humans use, regulate and alter water quantity
and quality
-Current issues - threats and solutions to water
management
-Practice water resource assessment methods
•Attitude -Your relationship with water:
-The way you think about water
-The way you use water
-Articles you share will demonstrate the importance of
water resources and their management
What are the 3 Core Areas of this course? - answerHydrology
Water Quality
Water Policy
Hydrology - answerHydrology: The Water Cycle
How does water move through the
landscape?
, -urbanization of streams, taming nature(dams), flooding??
water quality - answerWater Quality - "Is the water
safe?"
water management - answer"How are water quality and
quantity regulated?"
dipole structure - answerunequal sharing of electrons. Also called
a polar molecule
atom - answerProton: Determines what an element is; has mass, positive charge
Neutron: has mass; neutral charge
Electron: determines "behavior" of element; negligible mass; negative charge;
Hydrogen bonding - answerthe intermolecular force in which a hydrogen atom that is
bonded to a highly electronegative atom is attracted to an unshared pair of electrons of
an electronegative atom in a nearby molecule
ionic bond - answerone atom donates its electron to another atom
covalent bond - answerelectrons are shared equally between atoms
Physical structure of water - answerPhysical structure (H2O) is an isosceles
triangle
Ion - answerA charged atom
Molecule - answerA group of atoms bonded together
Electrical Structure - answerUnequal sharing of electrons
Oxygen has locally negative charge
Hydrogen has locally positive charge
Results in water being a
polar compound
Polar compound
- unequal charge
distribution
Leads to hydrogen bonding
What are the unique properties of water? - answerALL DUE TO HYDROGEN BOND
Polar nature (not unique to water) leads to very
strong H Bonding and . . .
Adhesion, Cohesion, Capillarity and High surface
tension
Exists in all 3 phases on earth's surface
