Water on earth?
What percentage of water on earth is salt water and what percentage is fresh?
97;3
What is a reservoir?
a lake that stores water for human use
What is the difference between permeable and impermeable?
water passes through easily; water does not pass through easily
What is a wetland?
The water in ponds and lakes is...
still
What do plants use water for?
photosynthesis; which produces food for them
The streams and small rivers that feed into a main river is called?
tributaries
Where is the water table located?
on top of the saturated zone
t/f; Wetlands act as a natural water filter
true
Water that falls to earth as rain, snow, sleet, or hail is...
precipitation
What is groundwater?
water that fills the cracks and spaces in underground soil and rock layers
What is one major difference between a lake and a pond?
lakes are typically deeper than ponds
The area of soil in which the pores are totally filled with water
saturated zone
t/f; marshes, bogs, and lakes are examples of freshwater wetlands
false; swamps
Where does the energy for the water cycle originally come from?
sun
Which two steps int eh water cycle involve a change in state?
evaporation and condensation
A ridge of land that separates two watersheds
divide
What are three ways people can get water from an aquifer?
springs, wells, and artesian wells.
Why are wetlands important to wildlife?
rich supply of nutrients and provides a habitat
People can obtain groundwater by drilling a well
a. above the water table
b. into an aquifer
c. into the saturated zone
d. into the impermeable layer
b. into an aquifer
Name the 6 parts of the water cycle
Explain eutrophication
Describe how water enters an aquifer
cobb's discretion
Give two reasons wetlands are worth preserving
cobb's discretion
AS water moves slowly through a wetland, some waste materials settle out, some wastes are absorbed by plants, and silt and mud is trapped by plant roots. In this way, wetlands act as natural
a. filters
b. habitats
c. tributaries
d. artesian wells
a. filters