Water and Its Properties
Give an example of cohesion.
Water forming a water droplet
What two processes allow water to change into gas?
Sublimation and Evaporation
What does stream load measure?
The amount of material carried by a stream
What factors affect density?
Temperature and salinity
What is the difference between point-source pollution and non-point-source pollution?
point-source pollution has one site of pollution and non-point-source pollution has many sites of pollution.
Why does ice float on liquid water?
Ice is less dense than water.
What powers the water cycle?
The sun
What land feature separates watersheds?
Divide
Why are convection currents important to Earth's system?
They transport matter and energy in Earth's system.
What government agency enforces the Safe Drinking Act?
Environmental Protection Agency (EPA)
What are the charges of oxygen and hydrogen in a water molecule?
Oxygen is negatively charged and hydrogen is positively charged
Within what water body does water move the slowest?
Groundwater
How does surface water becomes groundwater?
Water drains through the soil and filters down into underground rock, collecting in spaces between rock particles.
What are the three factors affect surface currents?
Continental deflection, the Coriolis effect, and global winds
How can dams and canals poorly impact the environmental?
They can both divert water over long distances which destroys natural stream ecosystems and flood habitats.
What percentage of fresh water is ice?
75%
Plants releasing water vapor into the air through tiny openings called stomata is known as what?
Transpiration
How would an increase in gradient affect the speed of water?
It would make water move faster.
How would fisheries be effected if upwelling stopped?
1) food for fish would decrease
2) fish might move to find other sources of food
3) fishermen would have to find new places to fish
What are the four main types of pollution?
chemical pollution, Biological Pollution, Thermal Pollution, Eutrophication
Why is clean water vital for human survival?
All living things need water to survive. If we do not have clean water we can get sick and died.
How do runoff and groundwater differ?
Runoff flows on Earth's surface and groundwater flows under Earth's surface.
What is the difference between porosity and permeability?
Porosity: The percentage of rock that is composed of open space (pores) to hold water.
Permeability: A measure of how easily water can flow through connected pores.
What direction do currents deflection to in the southern hemisphere?
left
What factors are looked at to determine the quality of water?
Dissolved solids
pH level
Dissolved Oxygen
Turbidity
Microbial Load: